Finding the Fourth Proportional to 7,142.86, 10,710.42 and 2,211.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,142.86 : 10,710.42 = 2,211.16 : x
2. Step 2: Convert to fraction form
   7,142.86/10,710.42 = 2,211.16/x
3. Step 3: Cross multiply
   7,142.86x = 10,710.42 × 2,211.16
4. Step 4: Simplify right side
   7,142.86x = 23,682,452.29
5. Step 5: Solve for x
   x = 23,682,452.29/7,142.86
6. Step 6: Final answer
   x = 3,315.54