Finding the Fourth Proportional to 16,960.71, 23,407.22 and 9,409.47

Step by Step Solution

1. Step 1: Write the proportion equation
   16,960.71 : 23,407.22 = 9,409.47 : x
2. Step 2: Convert to fraction form
   16,960.71/23,407.22 = 9,409.47/x
3. Step 3: Cross multiply
   16,960.71x = 23,407.22 × 9,409.47
4. Step 4: Simplify right side
   16,960.71x = 220,249,487.33
5. Step 5: Solve for x
   x = 220,249,487.33/16,960.71
6. Step 6: Final answer
   x = 12,985.86