Finding the Fourth Proportional to 52,260.06, 72,120.22 and 28,388.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,260.06 : 72,120.22 = 28,388.10 : x
2. Step 2: Convert to fraction form
   52,260.06/72,120.22 = 28,388.10/x
3. Step 3: Cross multiply
   52,260.06x = 72,120.22 × 28,388.10
4. Step 4: Simplify right side
   52,260.06x = 2,047,356,017.38
5. Step 5: Solve for x
   x = 2,047,356,017.38/52,260.06
6. Step 6: Final answer
   x = 39,176.30