Finding the Fourth Proportional to 9,135.57, 13,704.72 and 3,290.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,135.57 : 13,704.72 = 3,290.82 : x
2. Step 2: Convert to fraction form
   9,135.57/13,704.72 = 3,290.82/x
3. Step 3: Cross multiply
   9,135.57x = 13,704.72 × 3,290.82
4. Step 4: Simplify right side
   9,135.57x = 45,099,766.67
5. Step 5: Solve for x
   x = 45,099,766.67/9,135.57
6. Step 6: Final answer
   x = 4,936.72