Finding the Fourth Proportional to 23,168.23, 31,968.81 and 12,959.21

Step by Step Solution

1. Step 1: Write the proportion equation
   23,168.23 : 31,968.81 = 12,959.21 : x
2. Step 2: Convert to fraction form
   23,168.23/31,968.81 = 12,959.21/x
3. Step 3: Cross multiply
   23,168.23x = 31,968.81 × 12,959.21
4. Step 4: Simplify right side
   23,168.23x = 414,290,522.24
5. Step 5: Solve for x
   x = 414,290,522.24/23,168.23
6. Step 6: Final answer
   x = 17,881.84