Finding the Fourth Proportional to 3,960.41, 5,944.55 and 3,518.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,960.41 : 5,944.55 = 3,518.57 : x
2. Step 2: Convert to fraction form
   3,960.41/5,944.55 = 3,518.57/x
3. Step 3: Cross multiply
   3,960.41x = 5,944.55 × 3,518.57
4. Step 4: Simplify right side
   3,960.41x = 20,916,312.56
5. Step 5: Solve for x
   x = 20,916,312.56/3,960.41
6. Step 6: Final answer
   x = 5,281.35