Finding the Fourth Proportional to 9,479.06, 14,217.34 and 2,815.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,479.06 : 14,217.34 = 2,815.42 : x
2. Step 2: Convert to fraction form
   9,479.06/14,217.34 = 2,815.42/x
3. Step 3: Cross multiply
   9,479.06x = 14,217.34 × 2,815.42
4. Step 4: Simplify right side
   9,479.06x = 40,027,783.38
5. Step 5: Solve for x
   x = 40,027,783.38/9,479.06
6. Step 6: Final answer
   x = 4,222.76