Finding the Fourth Proportional to 52,270.30, 72,132.06 and 28,396.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,270.30 : 72,132.06 = 28,396.72 : x
2. Step 2: Convert to fraction form
   52,270.30/72,132.06 = 28,396.72/x
3. Step 3: Cross multiply
   52,270.30x = 72,132.06 × 28,396.72
4. Step 4: Simplify right side
   52,270.30x = 2,048,313,910.84
5. Step 5: Solve for x
   x = 2,048,313,910.84/52,270.30
6. Step 6: Final answer
   x = 39,186.96