Finding the Fourth Proportional to 13,662.68, 18,855.59 and 7,693.99

Step by Step Solution

1. Step 1: Write the proportion equation
   13,662.68 : 18,855.59 = 7,693.99 : x
2. Step 2: Convert to fraction form
   13,662.68/18,855.59 = 7,693.99/x
3. Step 3: Cross multiply
   13,662.68x = 18,855.59 × 7,693.99
4. Step 4: Simplify right side
   13,662.68x = 145,074,635.30
5. Step 5: Solve for x
   x = 145,074,635.30/13,662.68
6. Step 6: Final answer
   x = 10,618.32