Finding the Fourth Proportional to 3,903.62, 5,380.77 and 3,581.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,903.62 : 5,380.77 = 3,581.86 : x
2. Step 2: Convert to fraction form
   3,903.62/5,380.77 = 3,581.86/x
3. Step 3: Cross multiply
   3,903.62x = 5,380.77 × 3,581.86
4. Step 4: Simplify right side
   3,903.62x = 19,273,164.83
5. Step 5: Solve for x
   x = 19,273,164.83/3,903.62
6. Step 6: Final answer
   x = 4,937.25