Finding the Fourth Proportional to 5,097.90, 7,035.72 and 3,108.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,097.90 : 7,035.72 = 3,108.72 : x
2. Step 2: Convert to fraction form
   5,097.90/7,035.72 = 3,108.72/x
3. Step 3: Cross multiply
   5,097.90x = 7,035.72 × 3,108.72
4. Step 4: Simplify right side
   5,097.90x = 21,872,083.48
5. Step 5: Solve for x
   x = 21,872,083.48/5,097.90
6. Step 6: Final answer
   x = 4,290.41