Finding the Fourth Proportional to 19,683, 27,162.54 and 12,610.79

Step by Step Solution

1. Step 1: Write the proportion equation
   19,683 : 27,162.54 = 12,610.79 : x
2. Step 2: Convert to fraction form
   19,683/27,162.54 = 12,610.79/x
3. Step 3: Cross multiply
   19,683x = 27,162.54 × 12,610.79
4. Step 4: Simplify right side
   19,683x = 342,541,053.85
5. Step 5: Solve for x
   x = 342,541,053.85/19,683
6. Step 6: Final answer
   x = 17,402.89