Finding the Fourth Proportional to 22,945.31, 31,664.61 and 12,874.17

Step by Step Solution

1. Step 1: Write the proportion equation
   22,945.31 : 31,664.61 = 12,874.17 : x
2. Step 2: Convert to fraction form
   22,945.31/31,664.61 = 12,874.17/x
3. Step 3: Cross multiply
   22,945.31x = 31,664.61 × 12,874.17
4. Step 4: Simplify right side
   22,945.31x = 407,655,572.12
5. Step 5: Solve for x
   x = 407,655,572.12/22,945.31
6. Step 6: Final answer
   x = 17,766.40