Finding the Fourth Proportional to 3,993.47, 5,510.98 and 2,315.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.47 : 5,510.98 = 2,315.85 : x
2. Step 2: Convert to fraction form
   3,993.47/5,510.98 = 2,315.85/x
3. Step 3: Cross multiply
   3,993.47x = 5,510.98 × 2,315.85
4. Step 4: Simplify right side
   3,993.47x = 12,762,591.45
5. Step 5: Solve for x
   x = 12,762,591.45/3,993.47
6. Step 6: Final answer
   x = 3,195.87