Finding the Fourth Proportional to 52,521.34, 72,480.42 and 28,648.87

Step by Step Solution

1. Step 1: Write the proportion equation
   52,521.34 : 72,480.42 = 28,648.87 : x
2. Step 2: Convert to fraction form
   52,521.34/72,480.42 = 28,648.87/x
3. Step 3: Cross multiply
   52,521.34x = 72,480.42 × 28,648.87
4. Step 4: Simplify right side
   52,521.34x = 2,076,481,767.72
5. Step 5: Solve for x
   x = 2,076,481,767.72/52,521.34
6. Step 6: Final answer
   x = 39,535.97