Finding the Fourth Proportional to 31,413.40, 43,357.94 and 17,992.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,413.40 : 43,357.94 = 17,992.38 : x
2. Step 2: Convert to fraction form
   31,413.40/43,357.94 = 17,992.38/x
3. Step 3: Cross multiply
   31,413.40x = 43,357.94 × 17,992.38
4. Step 4: Simplify right side
   31,413.40x = 780,112,532.50
5. Step 5: Solve for x
   x = 780,112,532.50/31,413.40
6. Step 6: Final answer
   x = 24,833.75