Finding the Fourth Proportional to 5,151.72, 7,158.69 and 5,098.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,151.72 : 7,158.69 = 5,098.20 : x
2. Step 2: Convert to fraction form
   5,151.72/7,158.69 = 5,098.20/x
3. Step 3: Cross multiply
   5,151.72x = 7,158.69 × 5,098.20
4. Step 4: Simplify right side
   5,151.72x = 36,496,433.36
5. Step 5: Solve for x
   x = 36,496,433.36/5,151.72
6. Step 6: Final answer
   x = 7,084.32