Finding the Fourth Proportional to 31,228.58, 43,083.33 and 19,896.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,228.58 : 43,083.33 = 19,896.05 : x
2. Step 2: Convert to fraction form
   31,228.58/43,083.33 = 19,896.05/x
3. Step 3: Cross multiply
   31,228.58x = 43,083.33 × 19,896.05
4. Step 4: Simplify right side
   31,228.58x = 857,187,990.52
5. Step 5: Solve for x
   x = 857,187,990.52/31,228.58
6. Step 6: Final answer
   x = 27,448.83