Finding the Fourth Proportional to 23,573.72, 32,531.92 and 12,818.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,573.72 : 32,531.92 = 12,818.60 : x
2. Step 2: Convert to fraction form
   23,573.72/32,531.92 = 12,818.60/x
3. Step 3: Cross multiply
   23,573.72x = 32,531.92 × 12,818.60
4. Step 4: Simplify right side
   23,573.72x = 417,013,669.71
5. Step 5: Solve for x
   x = 417,013,669.71/23,573.72
6. Step 6: Final answer
   x = 17,689.77