Finding the Fourth Proportional to 20,164.32, 30,243.06 and 5,374.80

Step by Step Solution

1. Step 1: Write the proportion equation
   20,164.32 : 30,243.06 = 5,374.80 : x
2. Step 2: Convert to fraction form
   20,164.32/30,243.06 = 5,374.80/x
3. Step 3: Cross multiply
   20,164.32x = 30,243.06 × 5,374.80
4. Step 4: Simplify right side
   20,164.32x = 162,550,398.89
5. Step 5: Solve for x
   x = 162,550,398.89/20,164.32
6. Step 6: Final answer
   x = 8,061.29