Finding the Fourth Proportional to 36,780.67, 50,755.83 and 20,864.78

Step by Step Solution

1. Step 1: Write the proportion equation
   36,780.67 : 50,755.83 = 20,864.78 : x
2. Step 2: Convert to fraction form
   36,780.67/50,755.83 = 20,864.78/x
3. Step 3: Cross multiply
   36,780.67x = 50,755.83 × 20,864.78
4. Step 4: Simplify right side
   36,780.67x = 1,059,009,084.98
5. Step 5: Solve for x
   x = 1,059,009,084.98/36,780.67
6. Step 6: Final answer
   x = 28,792.54