Finding the Fourth Proportional to 8,290.33, 12,439.82 and 3,672.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,290.33 : 12,439.82 = 3,672.25 : x
2. Step 2: Convert to fraction form
   8,290.33/12,439.82 = 3,672.25/x
3. Step 3: Cross multiply
   8,290.33x = 12,439.82 × 3,672.25
4. Step 4: Simplify right side
   8,290.33x = 45,682,110.63
5. Step 5: Solve for x
   x = 45,682,110.63/8,290.33
6. Step 6: Final answer
   x = 5,510.29