We are given the regression equation $x = 3y + 6.35$, and we are asked to find the value of $x$ when $y = 5.36$.

Let's substitute $y = 5.36$ into the equation and solve for $x$:

$x = 3(5.36) + 6.35$

First, calculate $3 \times 5.36$:

$3 \times 5.36 = 16.08$

Now, add $6.35$ to $16.08$:

$x = 16.08 + 6.35 = 22.43$

So, the value of $x$ is $\boxed{22.43}$, which corresponds to option D.

Would you like more details or have any further questions? Here are some related questions to deepen your understanding:

1. What is the general form of a linear regression equation?
2. How do you interpret the coefficients in a linear regression model?
3. How would you solve for $y$ if the equation was $y = 3x + 6.35$ and $x = 5.36$?
4. What is the significance of the constant term $6.35$ in the equation?
5. Can you explain how the slope of $3$ affects the relationship between $x$ and $y$?

Tip: When solving linear equations, always check if both terms are correctly multiplied and added to avoid errors in calculations.