Finding the Fourth Proportional to 3,965.24, 5,471.89 and 2,286.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,965.24 : 5,471.89 = 2,286.72 : x
2. Step 2: Convert to fraction form
   3,965.24/5,471.89 = 2,286.72/x
3. Step 3: Cross multiply
   3,965.24x = 5,471.89 × 2,286.72
4. Step 4: Simplify right side
   3,965.24x = 12,512,690.00
5. Step 5: Solve for x
   x = 12,512,690.00/3,965.24
6. Step 6: Final answer
   x = 3,155.59