Finding the Fourth Proportional to 12,058.72, 18,090.89 and 3,738.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,058.72 : 18,090.89 = 3,738.30 : x
2. Step 2: Convert to fraction form
   12,058.72/18,090.89 = 3,738.30/x
3. Step 3: Cross multiply
   12,058.72x = 18,090.89 × 3,738.30
4. Step 4: Simplify right side
   12,058.72x = 67,629,174.09
5. Step 5: Solve for x
   x = 67,629,174.09/12,058.72
6. Step 6: Final answer
   x = 5,608.32