Finding the Fourth Proportional to 28,058.72, 42,078.94 and 9,333.73

Step by Step Solution

1. Step 1: Write the proportion equation
   28,058.72 : 42,078.94 = 9,333.73 : x
2. Step 2: Convert to fraction form
   28,058.72/42,078.94 = 9,333.73/x
3. Step 3: Cross multiply
   28,058.72x = 42,078.94 × 9,333.73
4. Step 4: Simplify right side
   28,058.72x = 392,753,464.65
5. Step 5: Solve for x
   x = 392,753,464.65/28,058.72
6. Step 6: Final answer
   x = 13,997.55