Finding the Fourth Proportional to 23,019.64, 31,768.05 and 12,948.55

Step by Step Solution

1. Step 1: Write the proportion equation
   23,019.64 : 31,768.05 = 12,948.55 : x
2. Step 2: Convert to fraction form
   23,019.64/31,768.05 = 12,948.55/x
3. Step 3: Cross multiply
   23,019.64x = 31,768.05 × 12,948.55
4. Step 4: Simplify right side
   23,019.64x = 411,350,183.83
5. Step 5: Solve for x
   x = 411,350,183.83/23,019.64
6. Step 6: Final answer
   x = 17,869.53