Finding the Fourth Proportional to 16,234.31, 22,402.91 and 9,160.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,234.31 : 22,402.91 = 9,160.18 : x
2. Step 2: Convert to fraction form
   16,234.31/22,402.91 = 9,160.18/x
3. Step 3: Cross multiply
   16,234.31x = 22,402.91 × 9,160.18
4. Step 4: Simplify right side
   16,234.31x = 205,214,655.02
5. Step 5: Solve for x
   x = 205,214,655.02/16,234.31
6. Step 6: Final answer
   x = 12,640.80