Finding the Fourth Proportional to 12,723.12, 17,557.90 and 7,058.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,723.12 : 17,557.90 = 7,058.73 : x
2. Step 2: Convert to fraction form
   12,723.12/17,557.90 = 7,058.73/x
3. Step 3: Cross multiply
   12,723.12x = 17,557.90 × 7,058.73
4. Step 4: Simplify right side
   12,723.12x = 123,936,523.66
5. Step 5: Solve for x
   x = 123,936,523.66/12,723.12
6. Step 6: Final answer
   x = 9,741.05