Finding the Fourth Proportional to 27,678.72, 38,196.72 and 15,103.44

Step by Step Solution

1. Step 1: Write the proportion equation
   27,678.72 : 38,196.72 = 15,103.44 : x
2. Step 2: Convert to fraction form
   27,678.72/38,196.72 = 15,103.44/x
3. Step 3: Cross multiply
   27,678.72x = 38,196.72 × 15,103.44
4. Step 4: Simplify right side
   27,678.72x = 576,901,868.72
5. Step 5: Solve for x
   x = 576,901,868.72/27,678.72
6. Step 6: Final answer
   x = 20,842.79