Finding the Fourth Proportional to 5,899.40, 8,141.60 and 3,906.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,899.40 : 8,141.60 = 3,906.56 : x
2. Step 2: Convert to fraction form
   5,899.40/8,141.60 = 3,906.56/x
3. Step 3: Cross multiply
   5,899.40x = 8,141.60 × 3,906.56
4. Step 4: Simplify right side
   5,899.40x = 31,805,648.90
5. Step 5: Solve for x
   x = 31,805,648.90/5,899.40
6. Step 6: Final answer
   x = 5,391.34