Finding the Fourth Proportional to 13,238.35, 19,859.37 and 3,879.03

Step by Step Solution

1. Step 1: Write the proportion equation
   13,238.35 : 19,859.37 = 3,879.03 : x
2. Step 2: Convert to fraction form
   13,238.35/19,859.37 = 3,879.03/x
3. Step 3: Cross multiply
   13,238.35x = 19,859.37 × 3,879.03
4. Step 4: Simplify right side
   13,238.35x = 77,035,092.01
5. Step 5: Solve for x
   x = 77,035,092.01/13,238.35
6. Step 6: Final answer
   x = 5,819.09