Finding the Fourth Proportional to 10,390.80, 15,574.42 and 3,724.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,390.80 : 15,574.42 = 3,724.22 : x
2. Step 2: Convert to fraction form
   10,390.80/15,574.42 = 3,724.22/x
3. Step 3: Cross multiply
   10,390.80x = 15,574.42 × 3,724.22
4. Step 4: Simplify right side
   10,390.80x = 58,002,566.45
5. Step 5: Solve for x
   x = 58,002,566.45/10,390.80
6. Step 6: Final answer
   x = 5,582.11