Finding the Fourth Proportional to 12,215.98, 18,322.35 and 3,451.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,215.98 : 18,322.35 = 3,451.69 : x
2. Step 2: Convert to fraction form
   12,215.98/18,322.35 = 3,451.69/x
3. Step 3: Cross multiply
   12,215.98x = 18,322.35 × 3,451.69
4. Step 4: Simplify right side
   12,215.98x = 63,243,072.27
5. Step 5: Solve for x
   x = 63,243,072.27/12,215.98
6. Step 6: Final answer
   x = 5,177.08