Question 641137
No, because x represents the unknown cost for a 14 inch pizza.  
The way the equation reads now is:  x number of inches per $4 is equal to 14 inches of pizza per $10.  We already know how many inches = $4.  We want to know how much 14 inches of pizza would cost

The correct way to set this proportion up is:

{{{10/4 = 14/x}}}

This equation now states that 10 inches of pizza per $4 is equal to 14 inches of pizza per x dollars.