Finding the Fourth Proportional to 7,238.50, 10,859.16 and 3,078.46

Step by Step Solution

1. Step 1: Write the proportion equation
   7,238.50 : 10,859.16 = 3,078.46 : x
2. Step 2: Convert to fraction form
   7,238.50/10,859.16 = 3,078.46/x
3. Step 3: Cross multiply
   7,238.50x = 10,859.16 × 3,078.46
4. Step 4: Simplify right side
   7,238.50x = 33,429,489.69
5. Step 5: Solve for x
   x = 33,429,489.69/7,238.50
6. Step 6: Final answer
   x = 4,618.29