Finding the Fourth Proportional to 12,009.87, 18,016.61 and 5,768.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,009.87 : 18,016.61 = 5,768.71 : x
2. Step 2: Convert to fraction form
   12,009.87/18,016.61 = 5,768.71/x
3. Step 3: Cross multiply
   12,009.87x = 18,016.61 × 5,768.71
4. Step 4: Simplify right side
   12,009.87x = 103,932,598.27
5. Step 5: Solve for x
   x = 103,932,598.27/12,009.87
6. Step 6: Final answer
   x = 8,653.93