Finding the Fourth Proportional to 16,789.28, 23,169.32 and 9,132.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,789.28 : 23,169.32 = 9,132.56 : x
2. Step 2: Convert to fraction form
   16,789.28/23,169.32 = 9,132.56/x
3. Step 3: Cross multiply
   16,789.28x = 23,169.32 × 9,132.56
4. Step 4: Simplify right side
   16,789.28x = 211,595,112.04
5. Step 5: Solve for x
   x = 211,595,112.04/16,789.28
6. Step 6: Final answer
   x = 12,602.99