Finding the Fourth Proportional to 12,105.28, 16,698.18 and 8,322.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105.28 : 16,698.18 = 8,322.04 : x
2. Step 2: Convert to fraction form
   12,105.28/16,698.18 = 8,322.04/x
3. Step 3: Cross multiply
   12,105.28x = 16,698.18 × 8,322.04
4. Step 4: Simplify right side
   12,105.28x = 138,962,921.89
5. Step 5: Solve for x
   x = 138,962,921.89/12,105.28
6. Step 6: Final answer
   x = 11,479.53