Finding the Fourth Proportional to 9,087.80, 12,542.29 and 5,108.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,087.80 : 12,542.29 = 5,108.91 : x
2. Step 2: Convert to fraction form
   9,087.80/12,542.29 = 5,108.91/x
3. Step 3: Cross multiply
   9,087.80x = 12,542.29 × 5,108.91
4. Step 4: Simplify right side
   9,087.80x = 64,077,441.55
5. Step 5: Solve for x
   x = 64,077,441.55/9,087.80
6. Step 6: Final answer
   x = 7,050.93