Finding the Fourth Proportional to 39,654.82, 54,727.15 and 21,753.31

Step by Step Solution

1. Step 1: Write the proportion equation
   39,654.82 : 54,727.15 = 21,753.31 : x
2. Step 2: Convert to fraction form
   39,654.82/54,727.15 = 21,753.31/x
3. Step 3: Cross multiply
   39,654.82x = 54,727.15 × 21,753.31
4. Step 4: Simplify right side
   39,654.82x = 1,190,496,659.37
5. Step 5: Solve for x
   x = 1,190,496,659.37/39,654.82
6. Step 6: Final answer
   x = 30,021.49