Finding the Fourth Proportional to 23,111.97, 31,894.45 and 12,501.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,111.97 : 31,894.45 = 12,501.78 : x
2. Step 2: Convert to fraction form
   23,111.97/31,894.45 = 12,501.78/x
3. Step 3: Cross multiply
   23,111.97x = 31,894.45 × 12,501.78
4. Step 4: Simplify right side
   23,111.97x = 398,737,397.12
5. Step 5: Solve for x
   x = 398,737,397.12/23,111.97
6. Step 6: Final answer
   x = 17,252.42