Finding the Fourth Proportional to 37,981.57, 52,413.47 and 20,985.48

Step by Step Solution

1. Step 1: Write the proportion equation
   37,981.57 : 52,413.47 = 20,985.48 : x
2. Step 2: Convert to fraction form
   37,981.57/52,413.47 = 20,985.48/x
3. Step 3: Cross multiply
   37,981.57x = 52,413.47 × 20,985.48
4. Step 4: Simplify right side
   37,981.57x = 1,099,921,826.42
5. Step 5: Solve for x
   x = 1,099,921,826.42/37,981.57
6. Step 6: Final answer
   x = 28,959.36