Finding the Fourth Proportional to 10,680.48, 16,015.68 and 4,109.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,680.48 : 16,015.68 = 4,109.76 : x
2. Step 2: Convert to fraction form
   10,680.48/16,015.68 = 4,109.76/x
3. Step 3: Cross multiply
   10,680.48x = 16,015.68 × 4,109.76
4. Step 4: Simplify right side
   10,680.48x = 65,820,601.04
5. Step 5: Solve for x
   x = 65,820,601.04/10,680.48
6. Step 6: Final answer
   x = 6,162.70