Finding the Fourth Proportional to 13,684.72, 18,885 and 7,397.08

Step by Step Solution

1. Step 1: Write the proportion equation
   13,684.72 : 18,885 = 7,397.08 : x
2. Step 2: Convert to fraction form
   13,684.72/18,885 = 7,397.08/x
3. Step 3: Cross multiply
   13,684.72x = 18,885 × 7,397.08
4. Step 4: Simplify right side
   13,684.72x = 139,693,855.80
5. Step 5: Solve for x
   x = 139,693,855.80/13,684.72
6. Step 6: Final answer
   x = 10,208.02