Finding the Fourth Proportional to 3,956.55, 5,459.31 and 2,540.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,956.55 : 5,459.31 = 2,540.49 : x
2. Step 2: Convert to fraction form
   3,956.55/5,459.31 = 2,540.49/x
3. Step 3: Cross multiply
   3,956.55x = 5,459.31 × 2,540.49
4. Step 4: Simplify right side
   3,956.55x = 13,869,322.46
5. Step 5: Solve for x
   x = 13,869,322.46/3,956.55
6. Step 6: Final answer
   x = 3,505.41