Finding the Fourth Proportional to 16,298.88, 22,490.25 and 9,580.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,298.88 : 22,490.25 = 9,580.56 : x
2. Step 2: Convert to fraction form
   16,298.88/22,490.25 = 9,580.56/x
3. Step 3: Cross multiply
   16,298.88x = 22,490.25 × 9,580.56
4. Step 4: Simplify right side
   16,298.88x = 215,469,189.54
5. Step 5: Solve for x
   x = 215,469,189.54/16,298.88
6. Step 6: Final answer
   x = 13,219.88