Finding the Fourth Proportional to 6,621.82, 9,934.89 and 3,158.62

Step by Step Solution

1. Step 1: Write the proportion equation
   6,621.82 : 9,934.89 = 3,158.62 : x
2. Step 2: Convert to fraction form
   6,621.82/9,934.89 = 3,158.62/x
3. Step 3: Cross multiply
   6,621.82x = 9,934.89 × 3,158.62
4. Step 4: Simplify right side
   6,621.82x = 31,380,542.25
5. Step 5: Solve for x
   x = 31,380,542.25/6,621.82
6. Step 6: Final answer
   x = 4,738.96