Finding the Fourth Proportional to 23,151.12, 31,948.52 and 12,540.76

Step by Step Solution

1. Step 1: Write the proportion equation
   23,151.12 : 31,948.52 = 12,540.76 : x
2. Step 2: Convert to fraction form
   23,151.12/31,948.52 = 12,540.76/x
3. Step 3: Cross multiply
   23,151.12x = 31,948.52 × 12,540.76
4. Step 4: Simplify right side
   23,151.12x = 400,658,721.68
5. Step 5: Solve for x
   x = 400,658,721.68/23,151.12
6. Step 6: Final answer
   x = 17,306.23