Finding the Fourth Proportional to 10,142.16, 15,218.69 and 4,223.14

Step by Step Solution

1. Step 1: Write the proportion equation
   10,142.16 : 15,218.69 = 4,223.14 : x
2. Step 2: Convert to fraction form
   10,142.16/15,218.69 = 4,223.14/x
3. Step 3: Cross multiply
   10,142.16x = 15,218.69 × 4,223.14
4. Step 4: Simplify right side
   10,142.16x = 64,270,658.49
5. Step 5: Solve for x
   x = 64,270,658.49/10,142.16
6. Step 6: Final answer
   x = 6,336.98