Finding the Fourth Proportional to 12,300.20, 16,969.17 and 7,826.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.20 : 16,969.17 = 7,826.42 : x
2. Step 2: Convert to fraction form
   12,300.20/16,969.17 = 7,826.42/x
3. Step 3: Cross multiply
   12,300.20x = 16,969.17 × 7,826.42
4. Step 4: Simplify right side
   12,300.20x = 132,807,851.47
5. Step 5: Solve for x
   x = 132,807,851.47/12,300.20
6. Step 6: Final answer
   x = 10,797.21