Finding the Fourth Proportional to 16,959.71, 23,404.53 and 9,405.62

Step by Step Solution

1. Step 1: Write the proportion equation
   16,959.71 : 23,404.53 = 9,405.62 : x
2. Step 2: Convert to fraction form
   16,959.71/23,404.53 = 9,405.62/x
3. Step 3: Cross multiply
   16,959.71x = 23,404.53 × 9,405.62
4. Step 4: Simplify right side
   16,959.71x = 220,133,951.41
5. Step 5: Solve for x
   x = 220,133,951.41/16,959.71
6. Step 6: Final answer
   x = 12,979.82