Finding the Fourth Proportional to 21,062.76, 31,583.54 and 7,017.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,062.76 : 31,583.54 = 7,017.82 : x
2. Step 2: Convert to fraction form
   21,062.76/31,583.54 = 7,017.82/x
3. Step 3: Cross multiply
   21,062.76x = 31,583.54 × 7,017.82
4. Step 4: Simplify right side
   21,062.76x = 221,647,598.68
5. Step 5: Solve for x
   x = 221,647,598.68/21,062.76
6. Step 6: Final answer
   x = 10,523.20