Finding the Fourth Proportional to 13,109.38, 18,081.56 and 8,066.99

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.38 : 18,081.56 = 8,066.99 : x
2. Step 2: Convert to fraction form
   13,109.38/18,081.56 = 8,066.99/x
3. Step 3: Cross multiply
   13,109.38x = 18,081.56 × 8,066.99
4. Step 4: Simplify right side
   13,109.38x = 145,863,829.08
5. Step 5: Solve for x
   x = 145,863,829.08/13,109.38
6. Step 6: Final answer
   x = 11,126.68