Finding the Fourth Proportional to 16,464.72, 22,721.88 and 9,012.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,464.72 : 22,721.88 = 9,012.72 : x
2. Step 2: Convert to fraction form
   16,464.72/22,721.88 = 9,012.72/x
3. Step 3: Cross multiply
   16,464.72x = 22,721.88 × 9,012.72
4. Step 4: Simplify right side
   16,464.72x = 204,785,942.31
5. Step 5: Solve for x
   x = 204,785,942.31/16,464.72
6. Step 6: Final answer
   x = 12,437.86