Finding the Fourth Proportional to 36,948.76, 50,991.06 and 20,821.72

Step by Step Solution

1. Step 1: Write the proportion equation
   36,948.76 : 50,991.06 = 20,821.72 : x
2. Step 2: Convert to fraction form
   36,948.76/50,991.06 = 20,821.72/x
3. Step 3: Cross multiply
   36,948.76x = 50,991.06 × 20,821.72
4. Step 4: Simplify right side
   36,948.76x = 1,061,721,573.82
5. Step 5: Solve for x
   x = 1,061,721,573.82/36,948.76
6. Step 6: Final answer
   x = 28,734.97