Finding the Fourth Proportional to 3,993.59, 5,510.60 and 2,315.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.59 : 5,510.60 = 2,315.15 : x
2. Step 2: Convert to fraction form
   3,993.59/5,510.60 = 2,315.15/x
3. Step 3: Cross multiply
   3,993.59x = 5,510.60 × 2,315.15
4. Step 4: Simplify right side
   3,993.59x = 12,757,826.46
5. Step 5: Solve for x
   x = 12,757,826.46/3,993.59
6. Step 6: Final answer
   x = 3,194.58