Finding the Fourth Proportional to 20,196.84, 30,292.83 and 5,405.43

Step by Step Solution

1. Step 1: Write the proportion equation
   20,196.84 : 30,292.83 = 5,405.43 : x
2. Step 2: Convert to fraction form
   20,196.84/30,292.83 = 5,405.43/x
3. Step 3: Cross multiply
   20,196.84x = 30,292.83 × 5,405.43
4. Step 4: Simplify right side
   20,196.84x = 163,745,772.07
5. Step 5: Solve for x
   x = 163,745,772.07/20,196.84
6. Step 6: Final answer
   x = 8,107.49