Problem: Solve for the variable x in the equation $\frac{x}{28} = \frac{9}{7}$. 1. Multiply both sides by 28 to isolate x. 2. Multiply: $x = 28 \times \frac{9}{7}$. 3. Simplify by grouping: $x = \frac{28}{7} \times 9$. 4. Compute $\frac{28}{7} = 4$, so $x = 4 \times 9$. 5. Compute the product: $x = 36$. Final answer: $x = 36$. Check: Substitute back to get $\frac{36}{28} = \frac{9}{7}$, which verifies the solution. Among the provided choices 27, 40, 45, and 36 the correct choice is 36.