Finding the Fourth Proportional to 16,407.36, 22,640.72 and 9,693.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,407.36 : 22,640.72 = 9,693.27 : x
2. Step 2: Convert to fraction form
   16,407.36/22,640.72 = 9,693.27/x
3. Step 3: Cross multiply
   16,407.36x = 22,640.72 × 9,693.27
4. Step 4: Simplify right side
   16,407.36x = 219,462,563.49
5. Step 5: Solve for x
   x = 219,462,563.49/16,407.36
6. Step 6: Final answer
   x = 13,375.86