Finding the Fourth Proportional to 8,665.73, 12,976.45 and 6,913.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,665.73 : 12,976.45 = 6,913.30 : x
2. Step 2: Convert to fraction form
   8,665.73/12,976.45 = 6,913.30/x
3. Step 3: Cross multiply
   8,665.73x = 12,976.45 × 6,913.30
4. Step 4: Simplify right side
   8,665.73x = 89,710,105.28
5. Step 5: Solve for x
   x = 89,710,105.28/8,665.73
6. Step 6: Final answer
   x = 10,352.28