Finding the Fourth Proportional to 16,651.50, 22,980.42 and 9,580.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,651.50 : 22,980.42 = 9,580.20 : x
2. Step 2: Convert to fraction form
   16,651.50/22,980.42 = 9,580.20/x
3. Step 3: Cross multiply
   16,651.50x = 22,980.42 × 9,580.20
4. Step 4: Simplify right side
   16,651.50x = 220,157,019.68
5. Step 5: Solve for x
   x = 220,157,019.68/16,651.50
6. Step 6: Final answer
   x = 13,221.45