Finding the Fourth Proportional to 5,488.50, 7,574.22 and 3,131.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,488.50 : 7,574.22 = 3,131.94 : x
2. Step 2: Convert to fraction form
   5,488.50/7,574.22 = 3,131.94/x
3. Step 3: Cross multiply
   5,488.50x = 7,574.22 × 3,131.94
4. Step 4: Simplify right side
   5,488.50x = 23,722,002.59
5. Step 5: Solve for x
   x = 23,722,002.59/5,488.50
6. Step 6: Final answer
   x = 4,322.13