Finding the Fourth Proportional to 9,087.75, 12,540.81 and 5,108.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,087.75 : 12,540.81 = 5,108.76 : x
2. Step 2: Convert to fraction form
   9,087.75/12,540.81 = 5,108.76/x
3. Step 3: Cross multiply
   9,087.75x = 12,540.81 × 5,108.76
4. Step 4: Simplify right side
   9,087.75x = 64,067,988.50
5. Step 5: Solve for x
   x = 64,067,988.50/9,087.75
6. Step 6: Final answer
   x = 7,049.93