Help with this C1 Maths Question Please.

The point P on the curve y = kÏx has x-coordinate 4. The normal to the curve at P is parallel to
the line 2x + 3y = 0.
(i) Find the value of k. [6]
(ii) This normal meets the x-axis at the point Q. Calculate the area of the triangle OPQ, where O is the point (0, 0).
I found out k which is 6, on part (ii) I have no idea how to get the point Q, I saw it on the markscheme however I just dont get how they got it.
Please Helppp!

btw that is k root x

find the equation of the normal at P
(you already have the gradient and you can find y coord)

then surely you can find where it crosses the x axis ... (set something to zero)

Okay so the equation of the normal is y= -2/3x
When this line crosses the x axis, y = 0. However if I set y to 0, I would get x at 0. But the mark scheme says x is 22 and the co-ordinates of (22,0). How do I do this? I am so confused.