Finding the Fourth Proportional to 7,238.05, 10,858.23 and 3,078.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,238.05 : 10,858.23 = 3,078.10 : x
2. Step 2: Convert to fraction form
   7,238.05/10,858.23 = 3,078.10/x
3. Step 3: Cross multiply
   7,238.05x = 10,858.23 × 3,078.10
4. Step 4: Simplify right side
   7,238.05x = 33,422,717.76
5. Step 5: Solve for x
   x = 33,422,717.76/7,238.05
6. Step 6: Final answer
   x = 4,617.64