Finding the Fourth Proportional to 7,020.78, 10,522.08 and 2,855.94

Step by Step Solution

1. Step 1: Write the proportion equation
   7,020.78 : 10,522.08 = 2,855.94 : x
2. Step 2: Convert to fraction form
   7,020.78/10,522.08 = 2,855.94/x
3. Step 3: Cross multiply
   7,020.78x = 10,522.08 × 2,855.94
4. Step 4: Simplify right side
   7,020.78x = 30,050,429.16
5. Step 5: Solve for x
   x = 30,050,429.16/7,020.78
6. Step 6: Final answer
   x = 4,280.21