Finding the Fourth Proportional to 8,436.54, 12,650.56 and 2,812.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,436.54 : 12,650.56 = 2,812.22 : x
2. Step 2: Convert to fraction form
   8,436.54/12,650.56 = 2,812.22/x
3. Step 3: Cross multiply
   8,436.54x = 12,650.56 × 2,812.22
4. Step 4: Simplify right side
   8,436.54x = 35,576,150.82
5. Step 5: Solve for x
   x = 35,576,150.82/8,436.54
6. Step 6: Final answer
   x = 4,216.91