Finding the Fourth Proportional to 12,271.89, 16,940.41 and 8,298.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,271.89 : 16,940.41 = 8,298.39 : x
2. Step 2: Convert to fraction form
   12,271.89/16,940.41 = 8,298.39/x
3. Step 3: Cross multiply
   12,271.89x = 16,940.41 × 8,298.39
4. Step 4: Simplify right side
   12,271.89x = 140,578,171.72
5. Step 5: Solve for x
   x = 140,578,171.72/12,271.89
6. Step 6: Final answer
   x = 11,455.30