Finding the Fourth Proportional to 39,648.42, 54,714.33 and 21,743.37

Step by Step Solution

1. Step 1: Write the proportion equation
   39,648.42 : 54,714.33 = 21,743.37 : x
2. Step 2: Convert to fraction form
   39,648.42/54,714.33 = 21,743.37/x
3. Step 3: Cross multiply
   39,648.42x = 54,714.33 × 21,743.37
4. Step 4: Simplify right side
   39,648.42x = 1,189,673,921.49
5. Step 5: Solve for x
   x = 1,189,673,921.49/39,648.42
6. Step 6: Final answer
   x = 30,005.58