Finding the Fourth Proportional to 34,019.42, 51,022.98 and 12,668.15

Step by Step Solution

1. Step 1: Write the proportion equation
   34,019.42 : 51,022.98 = 12,668.15 : x
2. Step 2: Convert to fraction form
   34,019.42/51,022.98 = 12,668.15/x
3. Step 3: Cross multiply
   34,019.42x = 51,022.98 × 12,668.15
4. Step 4: Simplify right side
   34,019.42x = 646,366,764.09
5. Step 5: Solve for x
   x = 646,366,764.09/34,019.42
6. Step 6: Final answer
   x = 18,999.93