Finding the Fourth Proportional to 28,399.52, 39,192.72 and 16,460.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,399.52 : 39,192.72 = 16,460.72 : x
2. Step 2: Convert to fraction form
   28,399.52/39,192.72 = 16,460.72/x
3. Step 3: Cross multiply
   28,399.52x = 39,192.72 × 16,460.72
4. Step 4: Simplify right side
   28,399.52x = 645,140,389.96
5. Step 5: Solve for x
   x = 645,140,389.96/28,399.52
6. Step 6: Final answer
   x = 22,716.59