Finding the Fourth Proportional to 23,151.33, 31,948.92 and 12,540.99

Step by Step Solution

1. Step 1: Write the proportion equation
   23,151.33 : 31,948.92 = 12,540.99 : x
2. Step 2: Convert to fraction form
   23,151.33/31,948.92 = 12,540.99/x
3. Step 3: Cross multiply
   23,151.33x = 31,948.92 × 12,540.99
4. Step 4: Simplify right side
   23,151.33x = 400,671,086.23
5. Step 5: Solve for x
   x = 400,671,086.23/23,151.33
6. Step 6: Final answer
   x = 17,306.61