Finding the Fourth Proportional to 12,212.34, 18,321.25 and 5,198.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,212.34 : 18,321.25 = 5,198.34 : x
2. Step 2: Convert to fraction form
   12,212.34/18,321.25 = 5,198.34/x
3. Step 3: Cross multiply
   12,212.34x = 18,321.25 × 5,198.34
4. Step 4: Simplify right side
   12,212.34x = 95,240,082.20
5. Step 5: Solve for x
   x = 95,240,082.20/12,212.34
6. Step 6: Final answer
   x = 7,798.67