Finding the Fourth Proportional to 12,284.50, 16,947.28 and 7,805.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,284.50 : 16,947.28 = 7,805.85 : x
2. Step 2: Convert to fraction form
   12,284.50/16,947.28 = 7,805.85/x
3. Step 3: Cross multiply
   12,284.50x = 16,947.28 × 7,805.85
4. Step 4: Simplify right side
   12,284.50x = 132,287,887.47
5. Step 5: Solve for x
   x = 132,287,887.47/12,284.50
6. Step 6: Final answer
   x = 10,768.68