Finding the Fourth Proportional to 5,858.28, 8,081.40 and 3,969.96

Step by Step Solution

1. Step 1: Write the proportion equation
   5,858.28 : 8,081.40 = 3,969.96 : x
2. Step 2: Convert to fraction form
   5,858.28/8,081.40 = 3,969.96/x
3. Step 3: Cross multiply
   5,858.28x = 8,081.40 × 3,969.96
4. Step 4: Simplify right side
   5,858.28x = 32,082,834.74
5. Step 5: Solve for x
   x = 32,082,834.74/5,858.28
6. Step 6: Final answer
   x = 5,476.49