Finding the Fourth Proportional to 9,087.49, 12,540.76 and 5,108.64

Step by Step Solution

1. Step 1: Write the proportion equation
   9,087.49 : 12,540.76 = 5,108.64 : x
2. Step 2: Convert to fraction form
   9,087.49/12,540.76 = 5,108.64/x
3. Step 3: Cross multiply
   9,087.49x = 12,540.76 × 5,108.64
4. Step 4: Simplify right side
   9,087.49x = 64,066,168.37
5. Step 5: Solve for x
   x = 64,066,168.37/9,087.49
6. Step 6: Final answer
   x = 7,049.93