Finding the Fourth Proportional to 16,890.69, 25,341.50 and 8,124.46

Step by Step Solution

1. Step 1: Write the proportion equation
   16,890.69 : 25,341.50 = 8,124.46 : x
2. Step 2: Convert to fraction form
   16,890.69/25,341.50 = 8,124.46/x
3. Step 3: Cross multiply
   16,890.69x = 25,341.50 × 8,124.46
4. Step 4: Simplify right side
   16,890.69x = 205,886,003.09
5. Step 5: Solve for x
   x = 205,886,003.09/16,890.69
6. Step 6: Final answer
   x = 12,189.32