Finding the Fourth Proportional to 13,323.22, 18,387 and 7,658.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,323.22 : 18,387 = 7,658.89 : x
2. Step 2: Convert to fraction form
   13,323.22/18,387 = 7,658.89/x
3. Step 3: Cross multiply
   13,323.22x = 18,387 × 7,658.89
4. Step 4: Simplify right side
   13,323.22x = 140,824,010.43
5. Step 5: Solve for x
   x = 140,824,010.43/13,323.22
6. Step 6: Final answer
   x = 10,569.82