Finding the Fourth Proportional to 16,309.90, 22,499.42 and 9,591.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,309.90 : 22,499.42 = 9,591.25 : x
2. Step 2: Convert to fraction form
   16,309.90/22,499.42 = 9,591.25/x
3. Step 3: Cross multiply
   16,309.90x = 22,499.42 × 9,591.25
4. Step 4: Simplify right side
   16,309.90x = 215,797,449.58
5. Step 5: Solve for x
   x = 215,797,449.58/16,309.90
6. Step 6: Final answer
   x = 13,231.08