Finding the Fourth Proportional to 8,131.10, 12,173.40 and 7,614.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.10 : 12,173.40 = 7,614.42 : x
2. Step 2: Convert to fraction form
   8,131.10/12,173.40 = 7,614.42/x
3. Step 3: Cross multiply
   8,131.10x = 12,173.40 × 7,614.42
4. Step 4: Simplify right side
   8,131.10x = 92,693,334.78
5. Step 5: Solve for x
   x = 92,693,334.78/8,131.10
6. Step 6: Final answer
   x = 11,399.86