Finding the Fourth Proportional to 10,998, 16,496.52 and 5,449.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,998 : 16,496.52 = 5,449.20 : x
2. Step 2: Convert to fraction form
   10,998/16,496.52 = 5,449.20/x
3. Step 3: Cross multiply
   10,998x = 16,496.52 × 5,449.20
4. Step 4: Simplify right side
   10,998x = 89,892,836.78
5. Step 5: Solve for x
   x = 89,892,836.78/10,998
6. Step 6: Final answer
   x = 8,173.56