Finding the Fourth Proportional to 16,706.72, 23,053.20 and 9,256.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,706.72 : 23,053.20 = 9,256.16 : x
2. Step 2: Convert to fraction form
   16,706.72/23,053.20 = 9,256.16/x
3. Step 3: Cross multiply
   16,706.72x = 23,053.20 × 9,256.16
4. Step 4: Simplify right side
   16,706.72x = 213,384,107.71
5. Step 5: Solve for x
   x = 213,384,107.71/16,706.72
6. Step 6: Final answer
   x = 12,772.35