Finding the Fourth Proportional to 9,478.69, 14,217.91 and 4,284.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,478.69 : 14,217.91 = 4,284.56 : x
2. Step 2: Convert to fraction form
   9,478.69/14,217.91 = 4,284.56/x
3. Step 3: Cross multiply
   9,478.69x = 14,217.91 × 4,284.56
4. Step 4: Simplify right side
   9,478.69x = 60,917,488.47
5. Step 5: Solve for x
   x = 60,917,488.47/9,478.69
6. Step 6: Final answer
   x = 6,426.78