Finding the Fourth Proportional to 13,324.68, 18,385.98 and 7,658.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,324.68 : 18,385.98 = 7,658.34 : x
2. Step 2: Convert to fraction form
   13,324.68/18,385.98 = 7,658.34/x
3. Step 3: Cross multiply
   13,324.68x = 18,385.98 × 7,658.34
4. Step 4: Simplify right side
   13,324.68x = 140,806,086.07
5. Step 5: Solve for x
   x = 140,806,086.07/13,324.68
6. Step 6: Final answer
   x = 10,567.31