Finding the Fourth Proportional to 5,426.19, 8,139.33 and 2,506.54

Step by Step Solution

1. Step 1: Write the proportion equation
   5,426.19 : 8,139.33 = 2,506.54 : x
2. Step 2: Convert to fraction form
   5,426.19/8,139.33 = 2,506.54/x
3. Step 3: Cross multiply
   5,426.19x = 8,139.33 × 2,506.54
4. Step 4: Simplify right side
   5,426.19x = 20,401,543.69
5. Step 5: Solve for x
   x = 20,401,543.69/5,426.19
6. Step 6: Final answer
   x = 3,759.83