Finding the Fourth Proportional to 5,097.20, 7,035.39 and 3,108.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,097.20 : 7,035.39 = 3,108.86 : x
2. Step 2: Convert to fraction form
   5,097.20/7,035.39 = 3,108.86/x
3. Step 3: Cross multiply
   5,097.20x = 7,035.39 × 3,108.86
4. Step 4: Simplify right side
   5,097.20x = 21,872,042.56
5. Step 5: Solve for x
   x = 21,872,042.56/5,097.20
6. Step 6: Final answer
   x = 4,290.99