Finding the Fourth Proportional to 10,282.10, 15,401.55 and 8,338.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,282.10 : 15,401.55 = 8,338.10 : x
2. Step 2: Convert to fraction form
   10,282.10/15,401.55 = 8,338.10/x
3. Step 3: Cross multiply
   10,282.10x = 15,401.55 × 8,338.10
4. Step 4: Simplify right side
   10,282.10x = 128,419,664.06
5. Step 5: Solve for x
   x = 128,419,664.06/10,282.10
6. Step 6: Final answer
   x = 12,489.63