Finding the Fourth Proportional to 9,308.89, 12,859.32 and 8,468.11

Step by Step Solution

1. Step 1: Write the proportion equation
   9,308.89 : 12,859.32 = 8,468.11 : x
2. Step 2: Convert to fraction form
   9,308.89/12,859.32 = 8,468.11/x
3. Step 3: Cross multiply
   9,308.89x = 12,859.32 × 8,468.11
4. Step 4: Simplify right side
   9,308.89x = 108,894,184.11
5. Step 5: Solve for x
   x = 108,894,184.11/9,308.89
6. Step 6: Final answer
   x = 11,697.87