Finding the Fourth Proportional to 50,390, 69,538.20 and 28,034

Step by Step Solution

1. Step 1: Write the proportion equation
   50,390 : 69,538.20 = 28,034 : x
2. Step 2: Convert to fraction form
   50,390/69,538.20 = 28,034/x
3. Step 3: Cross multiply
   50,390x = 69,538.20 × 28,034
4. Step 4: Simplify right side
   50,390x = 1,949,433,898.80
5. Step 5: Solve for x
   x = 1,949,433,898.80/50,390
6. Step 6: Final answer
   x = 38,686.92