Finding the Fourth Proportional to 19,675.73, 27,142.07 and 12,123.69

Step by Step Solution

1. Step 1: Write the proportion equation
   19,675.73 : 27,142.07 = 12,123.69 : x
2. Step 2: Convert to fraction form
   19,675.73/27,142.07 = 12,123.69/x
3. Step 3: Cross multiply
   19,675.73x = 27,142.07 × 12,123.69
4. Step 4: Simplify right side
   19,675.73x = 329,061,982.02
5. Step 5: Solve for x
   x = 329,061,982.02/19,675.73
6. Step 6: Final answer
   x = 16,724.26