Finding the Fourth Proportional to 7,196.08, 10,786.20 and 2,812.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,196.08 : 10,786.20 = 2,812.72 : x
2. Step 2: Convert to fraction form
   7,196.08/10,786.20 = 2,812.72/x
3. Step 3: Cross multiply
   7,196.08x = 10,786.20 × 2,812.72
4. Step 4: Simplify right side
   7,196.08x = 30,338,560.46
5. Step 5: Solve for x
   x = 30,338,560.46/7,196.08
6. Step 6: Final answer
   x = 4,215.98