Finding the Fourth Proportional to 16,769.67, 23,142.27 and 9,216.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,769.67 : 23,142.27 = 9,216.15 : x
2. Step 2: Convert to fraction form
   16,769.67/23,142.27 = 9,216.15/x
3. Step 3: Cross multiply
   16,769.67x = 23,142.27 × 9,216.15
4. Step 4: Simplify right side
   16,769.67x = 213,282,631.66
5. Step 5: Solve for x
   x = 213,282,631.66/16,769.67
6. Step 6: Final answer
   x = 12,718.36