Finding the Fourth Proportional to 8,640.02, 11,923.61 and 5,103.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,640.02 : 11,923.61 = 5,103.24 : x
2. Step 2: Convert to fraction form
   8,640.02/11,923.61 = 5,103.24/x
3. Step 3: Cross multiply
   8,640.02x = 11,923.61 × 5,103.24
4. Step 4: Simplify right side
   8,640.02x = 60,849,017.98
5. Step 5: Solve for x
   x = 60,849,017.98/8,640.02
6. Step 6: Final answer
   x = 7,042.70