Finding the Fourth Proportional to 23,151.35, 31,948.79 and 12,540.96

Step by Step Solution

1. Step 1: Write the proportion equation
   23,151.35 : 31,948.79 = 12,540.96 : x
2. Step 2: Convert to fraction form
   23,151.35/31,948.79 = 12,540.96/x
3. Step 3: Cross multiply
   23,151.35x = 31,948.79 × 12,540.96
4. Step 4: Simplify right side
   23,151.35x = 400,668,434.73
5. Step 5: Solve for x
   x = 400,668,434.73/23,151.35
6. Step 6: Final answer
   x = 17,306.48