Finding the Fourth Proportional to 20,290.24, 30,434.56 and 9,196.88

Step by Step Solution

1. Step 1: Write the proportion equation
   20,290.24 : 30,434.56 = 9,196.88 : x
2. Step 2: Convert to fraction form
   20,290.24/30,434.56 = 9,196.88/x
3. Step 3: Cross multiply
   20,290.24x = 30,434.56 × 9,196.88
4. Step 4: Simplify right side
   20,290.24x = 279,902,996.17
5. Step 5: Solve for x
   x = 279,902,996.17/20,290.24
6. Step 6: Final answer
   x = 13,794.96