Finding the Fourth Proportional to 12,723.78, 17,559.03 and 7,058.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,723.78 : 17,559.03 = 7,058.76 : x
2. Step 2: Convert to fraction form
   12,723.78/17,559.03 = 7,058.76/x
3. Step 3: Cross multiply
   12,723.78x = 17,559.03 × 7,058.76
4. Step 4: Simplify right side
   12,723.78x = 123,944,978.60
5. Step 5: Solve for x
   x = 123,944,978.60/12,723.78
6. Step 6: Final answer
   x = 9,741.21