Finding the Fourth Proportional to 52,745.72, 72,789.04 and 28,872.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,745.72 : 72,789.04 = 28,872.18 : x
2. Step 2: Convert to fraction form
   52,745.72/72,789.04 = 28,872.18/x
3. Step 3: Cross multiply
   52,745.72x = 72,789.04 × 28,872.18
4. Step 4: Simplify right side
   52,745.72x = 2,101,578,264.91
5. Step 5: Solve for x
   x = 2,101,578,264.91/52,745.72
6. Step 6: Final answer
   x = 39,843.58