Finding the Fourth Proportional to 3,965.56, 5,471.72 and 2,549.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,965.56 : 5,471.72 = 2,549.50 : x
2. Step 2: Convert to fraction form
   3,965.56/5,471.72 = 2,549.50/x
3. Step 3: Cross multiply
   3,965.56x = 5,471.72 × 2,549.50
4. Step 4: Simplify right side
   3,965.56x = 13,950,150.14
5. Step 5: Solve for x
   x = 13,950,150.14/3,965.56
6. Step 6: Final answer
   x = 3,517.83