Finding the Fourth Proportional to 12,940.26, 17,846.72 and 7,963.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,940.26 : 17,846.72 = 7,963.62 : x
2. Step 2: Convert to fraction form
   12,940.26/17,846.72 = 7,963.62/x
3. Step 3: Cross multiply
   12,940.26x = 17,846.72 × 7,963.62
4. Step 4: Simplify right side
   12,940.26x = 142,124,496.33
5. Step 5: Solve for x
   x = 142,124,496.33/12,940.26
6. Step 6: Final answer
   x = 10,983.13