Finding the Fourth Proportional to 23,020.14, 31,768.74 and 12,949.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,020.14 : 31,768.74 = 12,949.05 : x
2. Step 2: Convert to fraction form
   23,020.14/31,768.74 = 12,949.05/x
3. Step 3: Cross multiply
   23,020.14x = 31,768.74 × 12,949.05
4. Step 4: Simplify right side
   23,020.14x = 411,375,002.70
5. Step 5: Solve for x
   x = 411,375,002.70/23,020.14
6. Step 6: Final answer
   x = 17,870.22