Finding the Fourth Proportional to 22,541.57, 31,103.87 and 12,981.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,541.57 : 31,103.87 = 12,981.86 : x
2. Step 2: Convert to fraction form
   22,541.57/31,103.87 = 12,981.86/x
3. Step 3: Cross multiply
   22,541.57x = 31,103.87 × 12,981.86
4. Step 4: Simplify right side
   22,541.57x = 403,786,020.89
5. Step 5: Solve for x
   x = 403,786,020.89/22,541.57
6. Step 6: Final answer
   x = 17,912.95