Finding the Fourth Proportional to 9,087.48, 12,540.54 and 5,108.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,087.48 : 12,540.54 = 5,108.55 : x
2. Step 2: Convert to fraction form
   9,087.48/12,540.54 = 5,108.55/x
3. Step 3: Cross multiply
   9,087.48x = 12,540.54 × 5,108.55
4. Step 4: Simplify right side
   9,087.48x = 64,063,975.62
5. Step 5: Solve for x
   x = 64,063,975.62/9,087.48
6. Step 6: Final answer
   x = 7,049.70