Finding the Fourth Proportional to 28,426.83, 39,231.71 and 16,329

Step by Step Solution

1. Step 1: Write the proportion equation
   28,426.83 : 39,231.71 = 16,329 : x
2. Step 2: Convert to fraction form
   28,426.83/39,231.71 = 16,329/x
3. Step 3: Cross multiply
   28,426.83x = 39,231.71 × 16,329
4. Step 4: Simplify right side
   28,426.83x = 640,614,592.59
5. Step 5: Solve for x
   x = 640,614,592.59/28,426.83
6. Step 6: Final answer
   x = 22,535.56