Finding the Fourth Proportional to 13,081.88, 18,058.50 and 8,838.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.88 : 18,058.50 = 8,838.69 : x
2. Step 2: Convert to fraction form
   13,081.88/18,058.50 = 8,838.69/x
3. Step 3: Cross multiply
   13,081.88x = 18,058.50 × 8,838.69
4. Step 4: Simplify right side
   13,081.88x = 159,613,483.37
5. Step 5: Solve for x
   x = 159,613,483.37/13,081.88
6. Step 6: Final answer
   x = 12,201.12