Finding the Fourth Proportional to 19,723.55, 27,227.88 and 12,654.27

Step by Step Solution

1. Step 1: Write the proportion equation
   19,723.55 : 27,227.88 = 12,654.27 : x
2. Step 2: Convert to fraction form
   19,723.55/27,227.88 = 12,654.27/x
3. Step 3: Cross multiply
   19,723.55x = 27,227.88 × 12,654.27
4. Step 4: Simplify right side
   19,723.55x = 344,548,945.05
5. Step 5: Solve for x
   x = 344,548,945.05/19,723.55
6. Step 6: Final answer
   x = 17,468.92