Finding the Fourth Proportional to 16,139.52, 24,157.20 and 8,337.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,139.52 : 24,157.20 = 8,337.60 : x
2. Step 2: Convert to fraction form
   16,139.52/24,157.20 = 8,337.60/x
3. Step 3: Cross multiply
   16,139.52x = 24,157.20 × 8,337.60
4. Step 4: Simplify right side
   16,139.52x = 201,413,070.72
5. Step 5: Solve for x
   x = 201,413,070.72/16,139.52
6. Step 6: Final answer
   x = 12,479.50