Finding the Fourth Proportional to 10,019.92, 13,818.72 and 6,479.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,019.92 : 13,818.72 = 6,479.68 : x
2. Step 2: Convert to fraction form
   10,019.92/13,818.72 = 6,479.68/x
3. Step 3: Cross multiply
   10,019.92x = 13,818.72 × 6,479.68
4. Step 4: Simplify right side
   10,019.92x = 89,540,883.61
5. Step 5: Solve for x
   x = 89,540,883.61/10,019.92
6. Step 6: Final answer
   x = 8,936.29