Finding the Fourth Proportional to 16,244.72, 22,417.71 and 9,171.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,244.72 : 22,417.71 = 9,171.60 : x
2. Step 2: Convert to fraction form
   16,244.72/22,417.71 = 9,171.60/x
3. Step 3: Cross multiply
   16,244.72x = 22,417.71 × 9,171.60
4. Step 4: Simplify right side
   16,244.72x = 205,606,202.17
5. Step 5: Solve for x
   x = 205,606,202.17/16,244.72
6. Step 6: Final answer
   x = 12,656.80