Finding the Fourth Proportional to 16,071.24, 22,178.72 and 8,999.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,071.24 : 22,178.72 = 8,999.16 : x
2. Step 2: Convert to fraction form
   16,071.24/22,178.72 = 8,999.16/x
3. Step 3: Cross multiply
   16,071.24x = 22,178.72 × 8,999.16
4. Step 4: Simplify right side
   16,071.24x = 199,589,849.88
5. Step 5: Solve for x
   x = 199,589,849.88/16,071.24
6. Step 6: Final answer
   x = 12,419.07