Finding the Fourth Proportional to 39,748.72, 54,852.15 and 21,843.73

Step by Step Solution

1. Step 1: Write the proportion equation
   39,748.72 : 54,852.15 = 21,843.73 : x
2. Step 2: Convert to fraction form
   39,748.72/54,852.15 = 21,843.73/x
3. Step 3: Cross multiply
   39,748.72x = 54,852.15 × 21,843.73
4. Step 4: Simplify right side
   39,748.72x = 1,198,175,554.52
5. Step 5: Solve for x
   x = 1,198,175,554.52/39,748.72
6. Step 6: Final answer
   x = 30,143.75