Finding the Fourth Proportional to 3,939.13, 5,901.72 and 3,510.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939.13 : 5,901.72 = 3,510.10 : x
2. Step 2: Convert to fraction form
   3,939.13/5,901.72 = 3,510.10/x
3. Step 3: Cross multiply
   3,939.13x = 5,901.72 × 3,510.10
4. Step 4: Simplify right side
   3,939.13x = 20,715,627.37
5. Step 5: Solve for x
   x = 20,715,627.37/3,939.13
6. Step 6: Final answer
   x = 5,258.93