Finding the Fourth Proportional to 52,519.59, 72,478.01 and 28,647.12

Step by Step Solution

1. Step 1: Write the proportion equation
   52,519.59 : 72,478.01 = 28,647.12 : x
2. Step 2: Convert to fraction form
   52,519.59/72,478.01 = 28,647.12/x
3. Step 3: Cross multiply
   52,519.59x = 72,478.01 × 28,647.12
4. Step 4: Simplify right side
   52,519.59x = 2,076,286,249.83
5. Step 5: Solve for x
   x = 2,076,286,249.83/52,519.59
6. Step 6: Final answer
   x = 39,533.56