Finding the Fourth Proportional to 15,304.38, 21,118.89 and 8,588.71

Step by Step Solution

1. Step 1: Write the proportion equation
   15,304.38 : 21,118.89 = 8,588.71 : x
2. Step 2: Convert to fraction form
   15,304.38/21,118.89 = 8,588.71/x
3. Step 3: Cross multiply
   15,304.38x = 21,118.89 × 8,588.71
4. Step 4: Simplify right side
   15,304.38x = 181,383,972.54
5. Step 5: Solve for x
   x = 181,383,972.54/15,304.38
6. Step 6: Final answer
   x = 11,851.77