Finding the Fourth Proportional to 9,118.96, 13,662.04 and 8,479.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,118.96 : 13,662.04 = 8,479.27 : x
2. Step 2: Convert to fraction form
   9,118.96/13,662.04 = 8,479.27/x
3. Step 3: Cross multiply
   9,118.96x = 13,662.04 × 8,479.27
4. Step 4: Simplify right side
   9,118.96x = 115,844,084.69
5. Step 5: Solve for x
   x = 115,844,084.69/9,118.96
6. Step 6: Final answer
   x = 12,703.65