Finding the Fourth Proportional to 13,654.71, 18,843.39 and 7,686.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,654.71 : 18,843.39 = 7,686.23 : x
2. Step 2: Convert to fraction form
   13,654.71/18,843.39 = 7,686.23/x
3. Step 3: Cross multiply
   13,654.71x = 18,843.39 × 7,686.23
4. Step 4: Simplify right side
   13,654.71x = 144,834,535.30
5. Step 5: Solve for x
   x = 144,834,535.30/13,654.71
6. Step 6: Final answer
   x = 10,606.93