Finding the Fourth Proportional to 38,105.38, 57,161.88 and 13,142.14

Step by Step Solution

1. Step 1: Write the proportion equation
   38,105.38 : 57,161.88 = 13,142.14 : x
2. Step 2: Convert to fraction form
   38,105.38/57,161.88 = 13,142.14/x
3. Step 3: Cross multiply
   38,105.38x = 57,161.88 × 13,142.14
4. Step 4: Simplify right side
   38,105.38x = 751,229,429.62
5. Step 5: Solve for x
   x = 751,229,429.62/38,105.38
6. Step 6: Final answer
   x = 19,714.52