Finding the Fourth Proportional to 10,899.83, 16,359.98 and 5,357.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,899.83 : 16,359.98 = 5,357.17 : x
2. Step 2: Convert to fraction form
   10,899.83/16,359.98 = 5,357.17/x
3. Step 3: Cross multiply
   10,899.83x = 16,359.98 × 5,357.17
4. Step 4: Simplify right side
   10,899.83x = 87,643,187.72
5. Step 5: Solve for x
   x = 87,643,187.72/10,899.83
6. Step 6: Final answer
   x = 8,040.78