Finding the Fourth Proportional to 31,228.77, 43,083.59 and 19,896.23

Step by Step Solution

1. Step 1: Write the proportion equation
   31,228.77 : 43,083.59 = 19,896.23 : x
2. Step 2: Convert to fraction form
   31,228.77/43,083.59 = 19,896.23/x
3. Step 3: Cross multiply
   31,228.77x = 43,083.59 × 19,896.23
4. Step 4: Simplify right side
   31,228.77x = 857,201,173.32
5. Step 5: Solve for x
   x = 857,201,173.32/31,228.77
6. Step 6: Final answer
   x = 27,449.09