Finding the Fourth Proportional to 16,943.72, 23,383.92 and 9,390.38

Step by Step Solution

1. Step 1: Write the proportion equation
   16,943.72 : 23,383.92 = 9,390.38 : x
2. Step 2: Convert to fraction form
   16,943.72/23,383.92 = 9,390.38/x
3. Step 3: Cross multiply
   16,943.72x = 23,383.92 × 9,390.38
4. Step 4: Simplify right side
   16,943.72x = 219,583,894.69
5. Step 5: Solve for x
   x = 219,583,894.69/16,943.72
6. Step 6: Final answer
   x = 12,959.60