Finding the Fourth Proportional to 9,168.49, 13,744.49 and 3,321

Step by Step Solution

1. Step 1: Write the proportion equation
   9,168.49 : 13,744.49 = 3,321 : x
2. Step 2: Convert to fraction form
   9,168.49/13,744.49 = 3,321/x
3. Step 3: Cross multiply
   9,168.49x = 13,744.49 × 3,321
4. Step 4: Simplify right side
   9,168.49x = 45,645,434.69
5. Step 5: Solve for x
   x = 45,645,434.69/9,168.49
6. Step 6: Final answer
   x = 4,978.51