To solve this proportion, we need to find the values of y and x that satisfy the equation:

(7/12)y = (7/50) * (50x/4 4/5)

First, simplify the right side of the equation:

(7/50) (50x/4 4/5) = (7/50) (50x/(44/5))
= (7/50) (50x 5/44)
= (7/50) * (250x/44)
= (35/44)x

So, the equation now becomes:

(7/12)y = (35/44)x

Now, we can solve for y by isolating y:

y = (35/44)(12/7)x
y = (5/4)*x

Therefore, the solution to the proportion is: y = (5/4)*x