Finding the Fourth Proportional to 9,984.72, 14,978.22 and 3,321.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,984.72 : 14,978.22 = 3,321.80 : x
2. Step 2: Convert to fraction form
   9,984.72/14,978.22 = 3,321.80/x
3. Step 3: Cross multiply
   9,984.72x = 14,978.22 × 3,321.80
4. Step 4: Simplify right side
   9,984.72x = 49,754,651.20
5. Step 5: Solve for x
   x = 49,754,651.20/9,984.72
6. Step 6: Final answer
   x = 4,983.08