Finding the Fourth Proportional to 28,429, 39,231.18 and 16,491.52

Step by Step Solution

1. Step 1: Write the proportion equation
   28,429 : 39,231.18 = 16,491.52 : x
2. Step 2: Convert to fraction form
   28,429/39,231.18 = 16,491.52/x
3. Step 3: Cross multiply
   28,429x = 39,231.18 × 16,491.52
4. Step 4: Simplify right side
   28,429x = 646,981,789.59
5. Step 5: Solve for x
   x = 646,981,789.59/28,429
6. Step 6: Final answer
   x = 22,757.81