Finding the Fourth Proportional to 12,213.08, 18,320.78 and 3,328.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,213.08 : 18,320.78 = 3,328.52 : x
2. Step 2: Convert to fraction form
   12,213.08/18,320.78 = 3,328.52/x
3. Step 3: Cross multiply
   12,213.08x = 18,320.78 × 3,328.52
4. Step 4: Simplify right side
   12,213.08x = 60,981,082.65
5. Step 5: Solve for x
   x = 60,981,082.65/12,213.08
6. Step 6: Final answer
   x = 4,993.10