Finding the Fourth Proportional to 11,142.24, 15,375.72 and 6,426.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,142.24 : 15,375.72 = 6,426.24 : x
2. Step 2: Convert to fraction form
   11,142.24/15,375.72 = 6,426.24/x
3. Step 3: Cross multiply
   11,142.24x = 15,375.72 × 6,426.24
4. Step 4: Simplify right side
   11,142.24x = 98,808,066.89
5. Step 5: Solve for x
   x = 98,808,066.89/11,142.24
6. Step 6: Final answer
   x = 8,867.88