Finding the Fourth Proportional to 16,861.86, 23,270.94 and 12,605.54

Step by Step Solution

1. Step 1: Write the proportion equation
   16,861.86 : 23,270.94 = 12,605.54 : x
2. Step 2: Convert to fraction form
   16,861.86/23,270.94 = 12,605.54/x
3. Step 3: Cross multiply
   16,861.86x = 23,270.94 × 12,605.54
4. Step 4: Simplify right side
   16,861.86x = 293,342,765.01
5. Step 5: Solve for x
   x = 293,342,765.01/16,861.86
6. Step 6: Final answer
   x = 17,396.82