Finding the Fourth Proportional to 16,769.99, 23,141.47 and 9,216.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,769.99 : 23,141.47 = 9,216.16 : x
2. Step 2: Convert to fraction form
   16,769.99/23,141.47 = 9,216.16/x
3. Step 3: Cross multiply
   16,769.99x = 23,141.47 × 9,216.16
4. Step 4: Simplify right side
   16,769.99x = 213,275,513.32
5. Step 5: Solve for x
   x = 213,275,513.32/16,769.99
6. Step 6: Final answer
   x = 12,717.69