Finding the Fourth Proportional to 5,689.41, 7,846.18 and 3,899.49

Step by Step Solution

1. Step 1: Write the proportion equation
   5,689.41 : 7,846.18 = 3,899.49 : x
2. Step 2: Convert to fraction form
   5,689.41/7,846.18 = 3,899.49/x
3. Step 3: Cross multiply
   5,689.41x = 7,846.18 × 3,899.49
4. Step 4: Simplify right side
   5,689.41x = 30,596,100.45
5. Step 5: Solve for x
   x = 30,596,100.45/5,689.41
6. Step 6: Final answer
   x = 5,377.73