Finding the Fourth Proportional to 3,938.43, 5,429.59 and 2,817.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.43 : 5,429.59 = 2,817.41 : x
2. Step 2: Convert to fraction form
   3,938.43/5,429.59 = 2,817.41/x
3. Step 3: Cross multiply
   3,938.43x = 5,429.59 × 2,817.41
4. Step 4: Simplify right side
   3,938.43x = 15,297,381.16
5. Step 5: Solve for x
   x = 15,297,381.16/3,938.43
6. Step 6: Final answer
   x = 3,884.13