Finding the Fourth Proportional to 37,981, 52,413.78 and 21,214

Step by Step Solution

1. Step 1: Write the proportion equation
   37,981 : 52,413.78 = 21,214 : x
2. Step 2: Convert to fraction form
   37,981/52,413.78 = 21,214/x
3. Step 3: Cross multiply
   37,981x = 52,413.78 × 21,214
4. Step 4: Simplify right side
   37,981x = 1,111,905,928.92
5. Step 5: Solve for x
   x = 1,111,905,928.92/37,981
6. Step 6: Final answer
   x = 29,275.32