Finding the Fourth Proportional to 13,654.98, 18,842.63 and 7,685.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,654.98 : 18,842.63 = 7,685.69 : x
2. Step 2: Convert to fraction form
   13,654.98/18,842.63 = 7,685.69/x
3. Step 3: Cross multiply
   13,654.98x = 18,842.63 × 7,685.69
4. Step 4: Simplify right side
   13,654.98x = 144,818,480.32
5. Step 5: Solve for x
   x = 144,818,480.32/13,654.98
6. Step 6: Final answer
   x = 10,605.54