Finding the Fourth Proportional to 12,063.28, 16,649.76 and 8,245.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,063.28 : 16,649.76 = 8,245.12 : x
2. Step 2: Convert to fraction form
   12,063.28/16,649.76 = 8,245.12/x
3. Step 3: Cross multiply
   12,063.28x = 16,649.76 × 8,245.12
4. Step 4: Simplify right side
   12,063.28x = 137,279,269.17
5. Step 5: Solve for x
   x = 137,279,269.17/12,063.28
6. Step 6: Final answer
   x = 11,379.93