Finding the Fourth Proportional to 23,039.91, 31,792.81 and 12,968.17

Step by Step Solution

1. Step 1: Write the proportion equation
   23,039.91 : 31,792.81 = 12,968.17 : x
2. Step 2: Convert to fraction form
   23,039.91/31,792.81 = 12,968.17/x
3. Step 3: Cross multiply
   23,039.91x = 31,792.81 × 12,968.17
4. Step 4: Simplify right side
   23,039.91x = 412,294,564.86
5. Step 5: Solve for x
   x = 412,294,564.86/23,039.91
6. Step 6: Final answer
   x = 17,894.80