Finding the Fourth Proportional to 52,520.37, 72,478.10 and 28,647.03

Step by Step Solution

1. Step 1: Write the proportion equation
   52,520.37 : 72,478.10 = 28,647.03 : x
2. Step 2: Convert to fraction form
   52,520.37/72,478.10 = 28,647.03/x
3. Step 3: Cross multiply
   52,520.37x = 72,478.10 × 28,647.03
4. Step 4: Simplify right side
   52,520.37x = 2,076,282,161.81
5. Step 5: Solve for x
   x = 2,076,282,161.81/52,520.37
6. Step 6: Final answer
   x = 39,532.89