Finding the Fourth Proportional to 28,664.72, 39,562.92 and 16,088.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,664.72 : 39,562.92 = 16,088.72 : x
2. Step 2: Convert to fraction form
   28,664.72/39,562.92 = 16,088.72/x
3. Step 3: Cross multiply
   28,664.72x = 39,562.92 × 16,088.72
4. Step 4: Simplify right side
   28,664.72x = 636,516,742.26
5. Step 5: Solve for x
   x = 636,516,742.26/28,664.72
6. Step 6: Final answer
   x = 22,205.58