x = 16
Explanations:The given rquation is:
[tex]\frac{4}{7}=\text{ }\frac{x}{28}[/tex]Step 1: Cross multiply the equations. That is 28 multiplies 4 and 7 multiplies x:
[tex]28\text{ x 4 = 7 }\times\text{ x}[/tex] 112 = 7xStep 2: Divide both sides by 7
[tex]\frac{112}{7}=\text{ }\frac{7x}{7}[/tex] 16 = x x = 16