Finding the Fourth Proportional to 16,772.04, 23,145.96 and 9,218.62

Step by Step Solution

1. Step 1: Write the proportion equation
   16,772.04 : 23,145.96 = 9,218.62 : x
2. Step 2: Convert to fraction form
   16,772.04/23,145.96 = 9,218.62/x
3. Step 3: Cross multiply
   16,772.04x = 23,145.96 × 9,218.62
4. Step 4: Simplify right side
   16,772.04x = 213,373,809.78
5. Step 5: Solve for x
   x = 213,373,809.78/16,772.04
6. Step 6: Final answer
   x = 12,722.00