Finding the Fourth Proportional to 31,357.38, 43,293.46 and 19,433.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,357.38 : 43,293.46 = 19,433.38 : x
2. Step 2: Convert to fraction form
   31,357.38/43,293.46 = 19,433.38/x
3. Step 3: Cross multiply
   31,357.38x = 43,293.46 × 19,433.38
4. Step 4: Simplify right side
   31,357.38x = 841,338,259.69
5. Step 5: Solve for x
   x = 841,338,259.69/31,357.38
6. Step 6: Final answer
   x = 26,830.63