Finding the Fourth Proportional to 20,633.84, 30,928.56 and 8,793.76

Step by Step Solution

1. Step 1: Write the proportion equation
   20,633.84 : 30,928.56 = 8,793.76 : x
2. Step 2: Convert to fraction form
   20,633.84/30,928.56 = 8,793.76/x
3. Step 3: Cross multiply
   20,633.84x = 30,928.56 × 8,793.76
4. Step 4: Simplify right side
   20,633.84x = 271,978,333.79
5. Step 5: Solve for x
   x = 271,978,333.79/20,633.84
6. Step 6: Final answer
   x = 13,181.18