Finding the Fourth Proportional to 10,809.29, 16,199.79 and 5,539.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,809.29 : 16,199.79 = 5,539.83 : x
2. Step 2: Convert to fraction form
   10,809.29/16,199.79 = 5,539.83/x
3. Step 3: Cross multiply
   10,809.29x = 16,199.79 × 5,539.83
4. Step 4: Simplify right side
   10,809.29x = 89,744,082.64
5. Step 5: Solve for x
   x = 89,744,082.64/10,809.29
6. Step 6: Final answer
   x = 8,302.50