Finding the Fourth Proportional to 23,019.74, 31,766.55 and 12,948.74

Step by Step Solution

1. Step 1: Write the proportion equation
   23,019.74 : 31,766.55 = 12,948.74 : x
2. Step 2: Convert to fraction form
   23,019.74/31,766.55 = 12,948.74/x
3. Step 3: Cross multiply
   23,019.74x = 31,766.55 × 12,948.74
4. Step 4: Simplify right side
   23,019.74x = 411,336,796.65
5. Step 5: Solve for x
   x = 411,336,796.65/23,019.74
6. Step 6: Final answer
   x = 17,868.87