Finding the Fourth Proportional to 16,019.66, 22,105.62 and 9,305.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,019.66 : 22,105.62 = 9,305.12 : x
2. Step 2: Convert to fraction form
   16,019.66/22,105.62 = 9,305.12/x
3. Step 3: Cross multiply
   16,019.66x = 22,105.62 × 9,305.12
4. Step 4: Simplify right side
   16,019.66x = 205,695,446.77
5. Step 5: Solve for x
   x = 205,695,446.77/16,019.66
6. Step 6: Final answer
   x = 12,840.19