Finding the Fourth Proportional to 16,071.60, 22,178.56 and 8,998.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,071.60 : 22,178.56 = 8,998.28 : x
2. Step 2: Convert to fraction form
   16,071.60/22,178.56 = 8,998.28/x
3. Step 3: Cross multiply
   16,071.60x = 22,178.56 × 8,998.28
4. Step 4: Simplify right side
   16,071.60x = 199,568,892.88
5. Step 5: Solve for x
   x = 199,568,892.88/16,071.60
6. Step 6: Final answer
   x = 12,417.49