Finding the Fourth Proportional to 39,404.84, 54,383.46 and 28,789.16

Step by Step Solution

1. Step 1: Write the proportion equation
   39,404.84 : 54,383.46 = 28,789.16 : x
2. Step 2: Convert to fraction form
   39,404.84/54,383.46 = 28,789.16/x
3. Step 3: Cross multiply
   39,404.84x = 54,383.46 × 28,789.16
4. Step 4: Simplify right side
   39,404.84x = 1,565,654,131.29
5. Step 5: Solve for x
   x = 1,565,654,131.29/39,404.84
6. Step 6: Final answer
   x = 39,732.53