Finding the Fourth Proportional to 23,531.02, 32,472.57 and 12,920.38

Step by Step Solution

1. Step 1: Write the proportion equation
   23,531.02 : 32,472.57 = 12,920.38 : x
2. Step 2: Convert to fraction form
   23,531.02/32,472.57 = 12,920.38/x
3. Step 3: Cross multiply
   23,531.02x = 32,472.57 × 12,920.38
4. Step 4: Simplify right side
   23,531.02x = 419,557,943.98
5. Step 5: Solve for x
   x = 419,557,943.98/23,531.02
6. Step 6: Final answer
   x = 17,829.99