Finding the Fourth Proportional to 9,559.62, 13,180.86 and 8,231.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,559.62 : 13,180.86 = 8,231.04 : x
2. Step 2: Convert to fraction form
   9,559.62/13,180.86 = 8,231.04/x
3. Step 3: Cross multiply
   9,559.62x = 13,180.86 × 8,231.04
4. Step 4: Simplify right side
   9,559.62x = 108,492,185.89
5. Step 5: Solve for x
   x = 108,492,185.89/9,559.62
6. Step 6: Final answer
   x = 11,349.01