Finding the Fourth Proportional to 16,716.50, 25,071.56 and 8,394.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,716.50 : 25,071.56 = 8,394.27 : x
2. Step 2: Convert to fraction form
   16,716.50/25,071.56 = 8,394.27/x
3. Step 3: Cross multiply
   16,716.50x = 25,071.56 × 8,394.27
4. Step 4: Simplify right side
   16,716.50x = 210,457,443.96
5. Step 5: Solve for x
   x = 210,457,443.96/16,716.50
6. Step 6: Final answer
   x = 12,589.80