Finding the Fourth Proportional to 13,654.60, 18,842.46 and 7,686.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,654.60 : 18,842.46 = 7,686.42 : x
2. Step 2: Convert to fraction form
   13,654.60/18,842.46 = 7,686.42/x
3. Step 3: Cross multiply
   13,654.60x = 18,842.46 × 7,686.42
4. Step 4: Simplify right side
   13,654.60x = 144,831,061.39
5. Step 5: Solve for x
   x = 144,831,061.39/13,654.60
6. Step 6: Final answer
   x = 10,606.76