Finding the Fourth Proportional to 3,913.30, 5,872.38 and 3,901.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,913.30 : 5,872.38 = 3,901.15 : x
2. Step 2: Convert to fraction form
   3,913.30/5,872.38 = 3,901.15/x
3. Step 3: Cross multiply
   3,913.30x = 5,872.38 × 3,901.15
4. Step 4: Simplify right side
   3,913.30x = 22,909,035.24
5. Step 5: Solve for x
   x = 22,909,035.24/3,913.30
6. Step 6: Final answer
   x = 5,854.15