Finding the Fourth Proportional to 7,751.72, 10,687.20 and 5,098.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,751.72 : 10,687.20 = 5,098.16 : x
2. Step 2: Convert to fraction form
   7,751.72/10,687.20 = 5,098.16/x
3. Step 3: Cross multiply
   7,751.72x = 10,687.20 × 5,098.16
4. Step 4: Simplify right side
   7,751.72x = 54,485,055.55
5. Step 5: Solve for x
   x = 54,485,055.55/7,751.72
6. Step 6: Final answer
   x = 7,028.77