Finding the Fourth Proportional to 10,797.56, 16,168.79 and 8,609.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,797.56 : 16,168.79 = 8,609.48 : x
2. Step 2: Convert to fraction form
   10,797.56/16,168.79 = 8,609.48/x
3. Step 3: Cross multiply
   10,797.56x = 16,168.79 × 8,609.48
4. Step 4: Simplify right side
   10,797.56x = 139,204,814.81
5. Step 5: Solve for x
   x = 139,204,814.81/10,797.56
6. Step 6: Final answer
   x = 12,892.25