Finding the Fourth Proportional to 3,938.88, 5,434.69 and 2,594.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.88 : 5,434.69 = 2,594.34 : x
2. Step 2: Convert to fraction form
   3,938.88/5,434.69 = 2,594.34/x
3. Step 3: Cross multiply
   3,938.88x = 5,434.69 × 2,594.34
4. Step 4: Simplify right side
   3,938.88x = 14,099,433.65
5. Step 5: Solve for x
   x = 14,099,433.65/3,938.88
6. Step 6: Final answer
   x = 3,579.55