Finding the Fourth Proportional to 10,805.02, 16,217.58 and 5,543.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,805.02 : 16,217.58 = 5,543.80 : x
2. Step 2: Convert to fraction form
   10,805.02/16,217.58 = 5,543.80/x
3. Step 3: Cross multiply
   10,805.02x = 16,217.58 × 5,543.80
4. Step 4: Simplify right side
   10,805.02x = 89,907,020.00
5. Step 5: Solve for x
   x = 89,907,020.00/10,805.02
6. Step 6: Final answer
   x = 8,320.86