Finding the Fourth Proportional to 21,144.82, 31,718.62 and 7,103.74

Step by Step Solution

1. Step 1: Write the proportion equation
   21,144.82 : 31,718.62 = 7,103.74 : x
2. Step 2: Convert to fraction form
   21,144.82/31,718.62 = 7,103.74/x
3. Step 3: Cross multiply
   21,144.82x = 31,718.62 × 7,103.74
4. Step 4: Simplify right side
   21,144.82x = 225,320,829.64
5. Step 5: Solve for x
   x = 225,320,829.64/21,144.82
6. Step 6: Final answer
   x = 10,656.08