Finding the Fourth Proportional to 3,938.62, 5,900.98 and 3,509.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.62 : 5,900.98 = 3,509.59 : x
2. Step 2: Convert to fraction form
   3,938.62/5,900.98 = 3,509.59/x
3. Step 3: Cross multiply
   3,938.62x = 5,900.98 × 3,509.59
4. Step 4: Simplify right side
   3,938.62x = 20,710,020.40
5. Step 5: Solve for x
   x = 20,710,020.40/3,938.62
6. Step 6: Final answer
   x = 5,258.19