Finding the Fourth Proportional to 3,942.56, 5,440.82 and 2,547.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942.56 : 5,440.82 = 2,547.74 : x
2. Step 2: Convert to fraction form
   3,942.56/5,440.82 = 2,547.74/x
3. Step 3: Cross multiply
   3,942.56x = 5,440.82 × 2,547.74
4. Step 4: Simplify right side
   3,942.56x = 13,861,795.61
5. Step 5: Solve for x
   x = 13,861,795.61/3,942.56
6. Step 6: Final answer
   x = 3,515.94