Finding the Fourth Proportional to 13,677, 18,874.28 and 7,389.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,677 : 18,874.28 = 7,389.38 : x
2. Step 2: Convert to fraction form
   13,677/18,874.28 = 7,389.38/x
3. Step 3: Cross multiply
   13,677x = 18,874.28 × 7,389.38
4. Step 4: Simplify right side
   13,677x = 139,469,095.83
5. Step 5: Solve for x
   x = 139,469,095.83/13,677
6. Step 6: Final answer
   x = 10,197.35