Finding the Fourth Proportional to 20,298.28, 30,443.83 and 5,508.35

Step by Step Solution

1. Step 1: Write the proportion equation
   20,298.28 : 30,443.83 = 5,508.35 : x
2. Step 2: Convert to fraction form
   20,298.28/30,443.83 = 5,508.35/x
3. Step 3: Cross multiply
   20,298.28x = 30,443.83 × 5,508.35
4. Step 4: Simplify right side
   20,298.28x = 167,695,219.15
5. Step 5: Solve for x
   x = 167,695,219.15/20,298.28
6. Step 6: Final answer
   x = 8,261.55