Finding the Fourth Proportional to 3,900.30, 5,371.47 and 3,650.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.30 : 5,371.47 = 3,650.15 : x
2. Step 2: Convert to fraction form
   3,900.30/5,371.47 = 3,650.15/x
3. Step 3: Cross multiply
   3,900.30x = 5,371.47 × 3,650.15
4. Step 4: Simplify right side
   3,900.30x = 19,606,644.36
5. Step 5: Solve for x
   x = 19,606,644.36/3,900.30
6. Step 6: Final answer
   x = 5,026.96