Finding the Fourth Proportional to 31,399.17, 47,105.69 and 10,338.36

Step by Step Solution

1. Step 1: Write the proportion equation
   31,399.17 : 47,105.69 = 10,338.36 : x
2. Step 2: Convert to fraction form
   31,399.17/47,105.69 = 10,338.36/x
3. Step 3: Cross multiply
   31,399.17x = 47,105.69 × 10,338.36
4. Step 4: Simplify right side
   31,399.17x = 486,995,581.27
5. Step 5: Solve for x
   x = 486,995,581.27/31,399.17
6. Step 6: Final answer
   x = 15,509.82