Finding the Fourth Proportional to 16,148.71, 22,284.91 and 9,861.09

Step by Step Solution

1. Step 1: Write the proportion equation
   16,148.71 : 22,284.91 = 9,861.09 : x
2. Step 2: Convert to fraction form
   16,148.71/22,284.91 = 9,861.09/x
3. Step 3: Cross multiply
   16,148.71x = 22,284.91 × 9,861.09
4. Step 4: Simplify right side
   16,148.71x = 219,753,503.15
5. Step 5: Solve for x
   x = 219,753,503.15/16,148.71
6. Step 6: Final answer
   x = 13,608.12