Finding the Fourth Proportional to 9,131.88, 12,599.32 and 6,151.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.88 : 12,599.32 = 6,151.08 : x
2. Step 2: Convert to fraction form
   9,131.88/12,599.32 = 6,151.08/x
3. Step 3: Cross multiply
   9,131.88x = 12,599.32 × 6,151.08
4. Step 4: Simplify right side
   9,131.88x = 77,499,425.27
5. Step 5: Solve for x
   x = 77,499,425.27/9,131.88
6. Step 6: Final answer
   x = 8,486.69