Finding the Fourth Proportional to 10,984.50, 16,469.82 and 9,319.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,984.50 : 16,469.82 = 9,319.21 : x
2. Step 2: Convert to fraction form
   10,984.50/16,469.82 = 9,319.21/x
3. Step 3: Cross multiply
   10,984.50x = 16,469.82 × 9,319.21
4. Step 4: Simplify right side
   10,984.50x = 153,485,628.89
5. Step 5: Solve for x
   x = 153,485,628.89/10,984.50
6. Step 6: Final answer
   x = 13,972.93