Finding the Fourth Proportional to 9,005.76, 13,489.47 and 4,318.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,005.76 : 13,489.47 = 4,318.83 : x
2. Step 2: Convert to fraction form
   9,005.76/13,489.47 = 4,318.83/x
3. Step 3: Cross multiply
   9,005.76x = 13,489.47 × 4,318.83
4. Step 4: Simplify right side
   9,005.76x = 58,258,727.72
5. Step 5: Solve for x
   x = 58,258,727.72/9,005.76
6. Step 6: Final answer
   x = 6,469.05