Finding the Fourth Proportional to 5,581.98, 8,373.38 and 1,686.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,581.98 : 8,373.38 = 1,686.69 : x
2. Step 2: Convert to fraction form
   5,581.98/8,373.38 = 1,686.69/x
3. Step 3: Cross multiply
   5,581.98x = 8,373.38 × 1,686.69
4. Step 4: Simplify right side
   5,581.98x = 14,123,287.88
5. Step 5: Solve for x
   x = 14,123,287.88/5,581.98
6. Step 6: Final answer
   x = 2,530.16