Finding the Fourth Proportional to 7,222.18, 10,828.88 and 2,834.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,222.18 : 10,828.88 = 2,834.38 : x
2. Step 2: Convert to fraction form
   7,222.18/10,828.88 = 2,834.38/x
3. Step 3: Cross multiply
   7,222.18x = 10,828.88 × 2,834.38
4. Step 4: Simplify right side
   7,222.18x = 30,693,160.89
5. Step 5: Solve for x
   x = 30,693,160.89/7,222.18
6. Step 6: Final answer
   x = 4,249.85