Finding the Fourth Proportional to 3,956.25, 5,459.72 and 2,561.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,956.25 : 5,459.72 = 2,561.43 : x
2. Step 2: Convert to fraction form
   3,956.25/5,459.72 = 2,561.43/x
3. Step 3: Cross multiply
   3,956.25x = 5,459.72 × 2,561.43
4. Step 4: Simplify right side
   3,956.25x = 13,984,690.60
5. Step 5: Solve for x
   x = 13,984,690.60/3,956.25
6. Step 6: Final answer
   x = 3,534.83