Finding the Fourth Proportional to 16,449.59, 24,676.54 and 8,658.83

Step by Step Solution

1. Step 1: Write the proportion equation
   16,449.59 : 24,676.54 = 8,658.83 : x
2. Step 2: Convert to fraction form
   16,449.59/24,676.54 = 8,658.83/x
3. Step 3: Cross multiply
   16,449.59x = 24,676.54 × 8,658.83
4. Step 4: Simplify right side
   16,449.59x = 213,669,841.47
5. Step 5: Solve for x
   x = 213,669,841.47/16,449.59
6. Step 6: Final answer
   x = 12,989.38