Finding the Fourth Proportional to 23,132.09, 31,922.28 and 12,521.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,132.09 : 31,922.28 = 12,521.72 : x
2. Step 2: Convert to fraction form
   23,132.09/31,922.28 = 12,521.72/x
3. Step 3: Cross multiply
   23,132.09x = 31,922.28 × 12,521.72
4. Step 4: Simplify right side
   23,132.09x = 399,721,851.92
5. Step 5: Solve for x
   x = 399,721,851.92/23,132.09
6. Step 6: Final answer
   x = 17,279.97