Finding the Fourth Proportional to 5,678.27, 7,834.18 and 3,439.43

Step by Step Solution

1. Step 1: Write the proportion equation
   5,678.27 : 7,834.18 = 3,439.43 : x
2. Step 2: Convert to fraction form
   5,678.27/7,834.18 = 3,439.43/x
3. Step 3: Cross multiply
   5,678.27x = 7,834.18 × 3,439.43
4. Step 4: Simplify right side
   5,678.27x = 26,945,074.55
5. Step 5: Solve for x
   x = 26,945,074.55/5,678.27
6. Step 6: Final answer
   x = 4,745.30