Finding the Fourth Proportional to 12,585.32, 17,369.22 and 8,122.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,585.32 : 17,369.22 = 8,122.04 : x
2. Step 2: Convert to fraction form
   12,585.32/17,369.22 = 8,122.04/x
3. Step 3: Cross multiply
   12,585.32x = 17,369.22 × 8,122.04
4. Step 4: Simplify right side
   12,585.32x = 141,073,499.61
5. Step 5: Solve for x
   x = 141,073,499.61/12,585.32
6. Step 6: Final answer
   x = 11,209.37