Finding the Fourth Proportional to 9,141.75, 13,712.67 and 2,216.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,141.75 : 13,712.67 = 2,216.25 : x
2. Step 2: Convert to fraction form
   9,141.75/13,712.67 = 2,216.25/x
3. Step 3: Cross multiply
   9,141.75x = 13,712.67 × 2,216.25
4. Step 4: Simplify right side
   9,141.75x = 30,390,704.89
5. Step 5: Solve for x
   x = 30,390,704.89/9,141.75
6. Step 6: Final answer
   x = 3,324.39