Finding the Fourth Proportional to 3,956.15, 5,960.61 and 3,581.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,956.15 : 5,960.61 = 3,581.37 : x
2. Step 2: Convert to fraction form
   3,956.15/5,960.61 = 3,581.37/x
3. Step 3: Cross multiply
   3,956.15x = 5,960.61 × 3,581.37
4. Step 4: Simplify right side
   3,956.15x = 21,347,149.84
5. Step 5: Solve for x
   x = 21,347,149.84/3,956.15
6. Step 6: Final answer
   x = 5,395.94