Finding the Fourth Proportional to 12,216.29, 18,322.81 and 3,451.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,216.29 : 18,322.81 = 3,451.88 : x
2. Step 2: Convert to fraction form
   12,216.29/18,322.81 = 3,451.88/x
3. Step 3: Cross multiply
   12,216.29x = 18,322.81 × 3,451.88
4. Step 4: Simplify right side
   12,216.29x = 63,248,178.56
5. Step 5: Solve for x
   x = 63,248,178.56/12,216.29
6. Step 6: Final answer
   x = 5,177.37