Finding the Fourth Proportional to 52,521.37, 72,479.47 and 28,648.03

Step by Step Solution

1. Step 1: Write the proportion equation
   52,521.37 : 72,479.47 = 28,648.03 : x
2. Step 2: Convert to fraction form
   52,521.37/72,479.47 = 28,648.03/x
3. Step 3: Cross multiply
   52,521.37x = 72,479.47 × 28,648.03
4. Step 4: Simplify right side
   52,521.37x = 2,076,394,030.94
5. Step 5: Solve for x
   x = 2,076,394,030.94/52,521.37
6. Step 6: Final answer
   x = 39,534.27