Finding the Fourth Proportional to 21,144.60, 31,718.24 and 7,103.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,144.60 : 31,718.24 = 7,103.52 : x
2. Step 2: Convert to fraction form
   21,144.60/31,718.24 = 7,103.52/x
3. Step 3: Cross multiply
   21,144.60x = 31,718.24 × 7,103.52
4. Step 4: Simplify right side
   21,144.60x = 225,311,152.20
5. Step 5: Solve for x
   x = 225,311,152.20/21,144.60
6. Step 6: Final answer
   x = 10,655.73