Finding the Fourth Proportional to 16,959.38, 23,404.61 and 9,790.40

Step by Step Solution

1. Step 1: Write the proportion equation
   16,959.38 : 23,404.61 = 9,790.40 : x
2. Step 2: Convert to fraction form
   16,959.38/23,404.61 = 9,790.40/x
3. Step 3: Cross multiply
   16,959.38x = 23,404.61 × 9,790.40
4. Step 4: Simplify right side
   16,959.38x = 229,140,576.73
5. Step 5: Solve for x
   x = 229,140,576.73/16,959.38
6. Step 6: Final answer
   x = 13,511.15