Finding the Fourth Proportional to 20,067, 30,079.96 and 13,061.09

Step by Step Solution

1. Step 1: Write the proportion equation
   20,067 : 30,079.96 = 13,061.09 : x
2. Step 2: Convert to fraction form
   20,067/30,079.96 = 13,061.09/x
3. Step 3: Cross multiply
   20,067x = 30,079.96 × 13,061.09
4. Step 4: Simplify right side
   20,067x = 392,877,064.76
5. Step 5: Solve for x
   x = 392,877,064.76/20,067
6. Step 6: Final answer
   x = 19,578.27