Finding the Fourth Proportional to 12,103.78, 18,162.71 and 5,083.26

Step by Step Solution

1. Step 1: Write the proportion equation
   12,103.78 : 18,162.71 = 5,083.26 : x
2. Step 2: Convert to fraction form
   12,103.78/18,162.71 = 5,083.26/x
3. Step 3: Cross multiply
   12,103.78x = 18,162.71 × 5,083.26
4. Step 4: Simplify right side
   12,103.78x = 92,325,688.47
5. Step 5: Solve for x
   x = 92,325,688.47/12,103.78
6. Step 6: Final answer
   x = 7,627.84