Finding the Fourth Proportional to 16,769.34, 23,142.27 and 9,216.36

Step by Step Solution

1. Step 1: Write the proportion equation
   16,769.34 : 23,142.27 = 9,216.36 : x
2. Step 2: Convert to fraction form
   16,769.34/23,142.27 = 9,216.36/x
3. Step 3: Cross multiply
   16,769.34x = 23,142.27 × 9,216.36
4. Step 4: Simplify right side
   16,769.34x = 213,287,491.54
5. Step 5: Solve for x
   x = 213,287,491.54/16,769.34
6. Step 6: Final answer
   x = 12,718.90