Finding the Fourth Proportional to 52,271.33, 72,134.04 and 28,398.20

Step by Step Solution

1. Step 1: Write the proportion equation
   52,271.33 : 72,134.04 = 28,398.20 : x
2. Step 2: Convert to fraction form
   52,271.33/72,134.04 = 28,398.20/x
3. Step 3: Cross multiply
   52,271.33x = 72,134.04 × 28,398.20
4. Step 4: Simplify right side
   52,271.33x = 2,048,476,640.55
5. Step 5: Solve for x
   x = 2,048,476,640.55/52,271.33
6. Step 6: Final answer
   x = 39,189.30