Finding the Fourth Proportional to 8,443.92, 12,666.72 and 6,898.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,443.92 : 12,666.72 = 6,898.56 : x
2. Step 2: Convert to fraction form
   8,443.92/12,666.72 = 6,898.56/x
3. Step 3: Cross multiply
   8,443.92x = 12,666.72 × 6,898.56
4. Step 4: Simplify right side
   8,443.92x = 87,382,127.92
5. Step 5: Solve for x
   x = 87,382,127.92/8,443.92
6. Step 6: Final answer
   x = 10,348.53