Finding the Fourth Proportional to 21,531.72, 32,306.76 and 8,393.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,531.72 : 32,306.76 = 8,393.34 : x
2. Step 2: Convert to fraction form
   21,531.72/32,306.76 = 8,393.34/x
3. Step 3: Cross multiply
   21,531.72x = 32,306.76 × 8,393.34
4. Step 4: Simplify right side
   21,531.72x = 271,161,620.98
5. Step 5: Solve for x
   x = 271,161,620.98/21,531.72
6. Step 6: Final answer
   x = 12,593.59