Finding the Fourth Proportional to 12,290.26, 18,435.42 and 4,494.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,290.26 : 18,435.42 = 4,494.82 : x
2. Step 2: Convert to fraction form
   12,290.26/18,435.42 = 4,494.82/x
3. Step 3: Cross multiply
   12,290.26x = 18,435.42 × 4,494.82
4. Step 4: Simplify right side
   12,290.26x = 82,863,894.52
5. Step 5: Solve for x
   x = 82,863,894.52/12,290.26
6. Step 6: Final answer
   x = 6,742.24