Finding the Fourth Proportional to 15,103.59, 20,843.89 and 8,389.27

Step by Step Solution

1. Step 1: Write the proportion equation
   15,103.59 : 20,843.89 = 8,389.27 : x
2. Step 2: Convert to fraction form
   15,103.59/20,843.89 = 8,389.27/x
3. Step 3: Cross multiply
   15,103.59x = 20,843.89 × 8,389.27
4. Step 4: Simplify right side
   15,103.59x = 174,865,021.06
5. Step 5: Solve for x
   x = 174,865,021.06/15,103.59
6. Step 6: Final answer
   x = 11,577.71