Finding the Fourth Proportional to 16,151.67, 22,291.20 and 9,864.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,151.67 : 22,291.20 = 9,864.05 : x
2. Step 2: Convert to fraction form
   16,151.67/22,291.20 = 9,864.05/x
3. Step 3: Cross multiply
   16,151.67x = 22,291.20 × 9,864.05
4. Step 4: Simplify right side
   16,151.67x = 219,881,399.90
5. Step 5: Solve for x
   x = 219,881,399.90/16,151.67
6. Step 6: Final answer
   x = 13,613.54