Finding the Fourth Proportional to 20,188.96, 30,281.31 and 5,399.37

Step by Step Solution

1. Step 1: Write the proportion equation
   20,188.96 : 30,281.31 = 5,399.37 : x
2. Step 2: Convert to fraction form
   20,188.96/30,281.31 = 5,399.37/x
3. Step 3: Cross multiply
   20,188.96x = 30,281.31 × 5,399.37
4. Step 4: Simplify right side
   20,188.96x = 163,499,996.77
5. Step 5: Solve for x
   x = 163,499,996.77/20,188.96
6. Step 6: Final answer
   x = 8,098.49