What is the fourth distortion?

[Infinite]

Free will then creates polarity, also known as Love or Logos.

There are no distortions in the intelligent infinity:

There is no difference, potential or kinetic, in unity. The basic rhythms of intelligent infinity are totally without distortion of any kind.

(27.7)

But what about the fourth distortion? Any ideas? What comes after the distortion of light?

It's hard to say. Perhaps the next distortions would be the seven hermetic principles.

Curiously, a gnostic author called Samael Aun Weor wrote that in one of his books:

The first order of worlds is infinitely divine and ineffable; not a single mechanical principle exists in it; the one law governs it. (Law of One?)
The second order is unquestionably controlled by the three primary forces which regulate and direct all cosmic creation. (The third distortions?)
The third order of worlds, our galaxy or any galaxy in sacred space, is indubitably controlled by six laws. (Perhaps the hermetic principles? Although Samael has written about six laws not seven)
The fourth order of worlds, our solar system, or any solar system in infinite space, is always controlled by twelve laws.
The fifth order, our Earth, or any planet similar to ours, orbiting around any sun, is absolutely controlled by twenty-four laws.
The sixth cosmic order, any human organism, is definitely controlled by forty-eight laws; this we see totally proven in the human germinal cell, constituted as it is already known by forty-eight chromosomes. Lastly, the seventh order of worlds, is under the total control of ninety-six laws.

Source: "Yes There Is Hell, Evil, Karma" by Samael Aun Weor.