Finding the Fourth Proportional to 8,478.27, 12,715.94 and 2,238.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,478.27 : 12,715.94 = 2,238.34 : x
2. Step 2: Convert to fraction form
   8,478.27/12,715.94 = 2,238.34/x
3. Step 3: Cross multiply
   8,478.27x = 12,715.94 × 2,238.34
4. Step 4: Simplify right side
   8,478.27x = 28,462,597.14
5. Step 5: Solve for x
   x = 28,462,597.14/8,478.27
6. Step 6: Final answer
   x = 3,357.12