Finding the Fourth Proportional to 16,419.55, 22,658.58 and 9,151.59

Step by Step Solution

1. Step 1: Write the proportion equation
   16,419.55 : 22,658.58 = 9,151.59 : x
2. Step 2: Convert to fraction form
   16,419.55/22,658.58 = 9,151.59/x
3. Step 3: Cross multiply
   16,419.55x = 22,658.58 × 9,151.59
4. Step 4: Simplify right side
   16,419.55x = 207,361,949.17
5. Step 5: Solve for x
   x = 207,361,949.17/16,419.55
6. Step 6: Final answer
   x = 12,628.97