Finding the Fourth Proportional to 10,802.28, 16,191.72 and 5,530.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,802.28 : 16,191.72 = 5,530.06 : x
2. Step 2: Convert to fraction form
   10,802.28/16,191.72 = 5,530.06/x
3. Step 3: Cross multiply
   10,802.28x = 16,191.72 × 5,530.06
4. Step 4: Simplify right side
   10,802.28x = 89,541,161.13
5. Step 5: Solve for x
   x = 89,541,161.13/10,802.28
6. Step 6: Final answer
   x = 8,289.10