Finding the Fourth Proportional to 16,231.47, 22,398.98 and 9,158.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,231.47 : 22,398.98 = 9,158.55 : x
2. Step 2: Convert to fraction form
   16,231.47/22,398.98 = 9,158.55/x
3. Step 3: Cross multiply
   16,231.47x = 22,398.98 × 9,158.55
4. Step 4: Simplify right side
   16,231.47x = 205,142,132.49
5. Step 5: Solve for x
   x = 205,142,132.49/16,231.47
6. Step 6: Final answer
   x = 12,638.54