Finding the Fourth Proportional to 21,241.82, 31,842.82 and 7,192.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,241.82 : 31,842.82 = 7,192.02 : x
2. Step 2: Convert to fraction form
   21,241.82/31,842.82 = 7,192.02/x
3. Step 3: Cross multiply
   21,241.82x = 31,842.82 × 7,192.02
4. Step 4: Simplify right side
   21,241.82x = 229,014,198.30
5. Step 5: Solve for x
   x = 229,014,198.30/21,241.82
6. Step 6: Final answer
   x = 10,781.29