Finding the Fourth Proportional to 3,993.74, 5,512.15 and 2,315.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.74 : 5,512.15 = 2,315.52 : x
2. Step 2: Convert to fraction form
   3,993.74/5,512.15 = 2,315.52/x
3. Step 3: Cross multiply
   3,993.74x = 5,512.15 × 2,315.52
4. Step 4: Simplify right side
   3,993.74x = 12,763,496.46
5. Step 5: Solve for x
   x = 12,763,496.46/3,993.74
6. Step 6: Final answer
   x = 3,195.88