Finding the Fourth Proportional to 22,456.29, 30,989.52 and 12,385.14

Step by Step Solution

1. Step 1: Write the proportion equation
   22,456.29 : 30,989.52 = 12,385.14 : x
2. Step 2: Convert to fraction form
   22,456.29/30,989.52 = 12,385.14/x
3. Step 3: Cross multiply
   22,456.29x = 30,989.52 × 12,385.14
4. Step 4: Simplify right side
   22,456.29x = 383,809,543.73
5. Step 5: Solve for x
   x = 383,809,543.73/22,456.29
6. Step 6: Final answer
   x = 17,091.40