Finding the Fourth Proportional to 22,665.08, 31,277.13 and 12,456.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,665.08 : 31,277.13 = 12,456.15 : x
2. Step 2: Convert to fraction form
   22,665.08/31,277.13 = 12,456.15/x
3. Step 3: Cross multiply
   22,665.08x = 31,277.13 × 12,456.15
4. Step 4: Simplify right side
   22,665.08x = 389,592,622.85
5. Step 5: Solve for x
   x = 389,592,622.85/22,665.08
6. Step 6: Final answer
   x = 17,189.11