Finding the Fourth Proportional to 3,956.50, 5,460.06 and 2,561.68

Step by Step Solution

1. Step 1: Write the proportion equation
   3,956.50 : 5,460.06 = 2,561.68 : x
2. Step 2: Convert to fraction form
   3,956.50/5,460.06 = 2,561.68/x
3. Step 3: Cross multiply
   3,956.50x = 5,460.06 × 2,561.68
4. Step 4: Simplify right side
   3,956.50x = 13,986,926.50
5. Step 5: Solve for x
   x = 13,986,926.50/3,956.50
6. Step 6: Final answer
   x = 3,535.18