Finding the Fourth Proportional to 9,519.78, 14,271.45 and 3,680.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,519.78 : 14,271.45 = 3,680.49 : x
2. Step 2: Convert to fraction form
   9,519.78/14,271.45 = 3,680.49/x
3. Step 3: Cross multiply
   9,519.78x = 14,271.45 × 3,680.49
4. Step 4: Simplify right side
   9,519.78x = 52,525,929.01
5. Step 5: Solve for x
   x = 52,525,929.01/9,519.78
6. Step 6: Final answer
   x = 5,517.56