Finding the Fourth Proportional to 8,640.72, 11,923.52 and 5,103.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,640.72 : 11,923.52 = 5,103.27 : x
2. Step 2: Convert to fraction form
   8,640.72/11,923.52 = 5,103.27/x
3. Step 3: Cross multiply
   8,640.72x = 11,923.52 × 5,103.27
4. Step 4: Simplify right side
   8,640.72x = 60,848,916.39
5. Step 5: Solve for x
   x = 60,848,916.39/8,640.72
6. Step 6: Final answer
   x = 7,042.11