Finding the Fourth Proportional to 13,654.06, 18,842.52 and 7,685.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,654.06 : 18,842.52 = 7,685.78 : x
2. Step 2: Convert to fraction form
   13,654.06/18,842.52 = 7,685.78/x
3. Step 3: Cross multiply
   13,654.06x = 18,842.52 × 7,685.78
4. Step 4: Simplify right side
   13,654.06x = 144,819,463.37
5. Step 5: Solve for x
   x = 144,819,463.37/13,654.06
6. Step 6: Final answer
   x = 10,606.33