Finding the Fourth Proportional to 20,196.25, 30,293.96 and 5,405.18

Step by Step Solution

1. Step 1: Write the proportion equation
   20,196.25 : 30,293.96 = 5,405.18 : x
2. Step 2: Convert to fraction form
   20,196.25/30,293.96 = 5,405.18/x
3. Step 3: Cross multiply
   20,196.25x = 30,293.96 × 5,405.18
4. Step 4: Simplify right side
   20,196.25x = 163,744,128.22
5. Step 5: Solve for x
   x = 163,744,128.22/20,196.25
6. Step 6: Final answer
   x = 8,107.65