Finding the Fourth Proportional to 5,398.72, 8,098.17 and 3,940.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,398.72 : 8,098.17 = 3,940.72 : x
2. Step 2: Convert to fraction form
   5,398.72/8,098.17 = 3,940.72/x
3. Step 3: Cross multiply
   5,398.72x = 8,098.17 × 3,940.72
4. Step 4: Simplify right side
   5,398.72x = 31,912,620.48
5. Step 5: Solve for x
   x = 31,912,620.48/5,398.72
6. Step 6: Final answer
   x = 5,911.15