Finding the Fourth Proportional to 3,938.88, 5,435.72 and 2,544.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.88 : 5,435.72 = 2,544.06 : x
2. Step 2: Convert to fraction form
   3,938.88/5,435.72 = 2,544.06/x
3. Step 3: Cross multiply
   3,938.88x = 5,435.72 × 2,544.06
4. Step 4: Simplify right side
   3,938.88x = 13,828,757.92
5. Step 5: Solve for x
   x = 13,828,757.92/3,938.88
6. Step 6: Final answer
   x = 3,510.84