Finding the Fourth Proportional to 3,993.15, 5,510.62 and 2,315.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.15 : 5,510.62 = 2,315.10 : x
2. Step 2: Convert to fraction form
   3,993.15/5,510.62 = 2,315.10/x
3. Step 3: Cross multiply
   3,993.15x = 5,510.62 × 2,315.10
4. Step 4: Simplify right side
   3,993.15x = 12,757,608.81
5. Step 5: Solve for x
   x = 12,757,608.81/3,993.15
6. Step 6: Final answer
   x = 3,194.88