Finding the Fourth Proportional to 10,174.20, 14,039.98 and 5,698.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,174.20 : 14,039.98 = 5,698.20 : x
2. Step 2: Convert to fraction form
   10,174.20/14,039.98 = 5,698.20/x
3. Step 3: Cross multiply
   10,174.20x = 14,039.98 × 5,698.20
4. Step 4: Simplify right side
   10,174.20x = 80,002,614.04
5. Step 5: Solve for x
   x = 80,002,614.04/10,174.20
6. Step 6: Final answer
   x = 7,863.28