Finding the Fourth Proportional to 9,662.16, 13,326.88 and 8,868.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,662.16 : 13,326.88 = 8,868.06 : x
2. Step 2: Convert to fraction form
   9,662.16/13,326.88 = 8,868.06/x
3. Step 3: Cross multiply
   9,662.16x = 13,326.88 × 8,868.06
4. Step 4: Simplify right side
   9,662.16x = 118,183,571.45
5. Step 5: Solve for x
   x = 118,183,571.45/9,662.16
6. Step 6: Final answer
   x = 12,231.59