Finding the Fourth Proportional to 6,290.87, 8,680.83 and 3,458.22

Step by Step Solution

1. Step 1: Write the proportion equation
   6,290.87 : 8,680.83 = 3,458.22 : x
2. Step 2: Convert to fraction form
   6,290.87/8,680.83 = 3,458.22/x
3. Step 3: Cross multiply
   6,290.87x = 8,680.83 × 3,458.22
4. Step 4: Simplify right side
   6,290.87x = 30,020,219.92
5. Step 5: Solve for x
   x = 30,020,219.92/6,290.87
6. Step 6: Final answer
   x = 4,772.03