Finding the Fourth Proportional to 28,267.38, 42,391.15 and 8,271.35

Step by Step Solution

1. Step 1: Write the proportion equation
   28,267.38 : 42,391.15 = 8,271.35 : x
2. Step 2: Convert to fraction form
   28,267.38/42,391.15 = 8,271.35/x
3. Step 3: Cross multiply
   28,267.38x = 42,391.15 × 8,271.35
4. Step 4: Simplify right side
   28,267.38x = 350,631,964.89
5. Step 5: Solve for x
   x = 350,631,964.89/28,267.38
6. Step 6: Final answer
   x = 12,404.12