Finding the Fourth Proportional to 10,990.18, 16,481.82 and 3,969.27

Step by Step Solution

1. Step 1: Write the proportion equation
   10,990.18 : 16,481.82 = 3,969.27 : x
2. Step 2: Convert to fraction form
   10,990.18/16,481.82 = 3,969.27/x
3. Step 3: Cross multiply
   10,990.18x = 16,481.82 × 3,969.27
4. Step 4: Simplify right side
   10,990.18x = 65,420,793.67
5. Step 5: Solve for x
   x = 65,420,793.67/10,990.18
6. Step 6: Final answer
   x = 5,952.66