Finding the Fourth Proportional to 10,997.05, 15,163.89 and 8,169.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,997.05 : 15,163.89 = 8,169.67 : x
2. Step 2: Convert to fraction form
   10,997.05/15,163.89 = 8,169.67/x
3. Step 3: Cross multiply
   10,997.05x = 15,163.89 × 8,169.67
4. Step 4: Simplify right side
   10,997.05x = 123,884,008.76
5. Step 5: Solve for x
   x = 123,884,008.76/10,997.05
6. Step 6: Final answer
   x = 11,265.20