Finding the Fourth Proportional to 7,196.42, 10,792.20 and 2,812.70

Step by Step Solution

1. Step 1: Write the proportion equation
   7,196.42 : 10,792.20 = 2,812.70 : x
2. Step 2: Convert to fraction form
   7,196.42/10,792.20 = 2,812.70/x
3. Step 3: Cross multiply
   7,196.42x = 10,792.20 × 2,812.70
4. Step 4: Simplify right side
   7,196.42x = 30,355,220.94
5. Step 5: Solve for x
   x = 30,355,220.94/7,196.42
6. Step 6: Final answer
   x = 4,218.10