Finding the Fourth Proportional to 21,063.76, 31,585.04 and 7,018.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,063.76 : 31,585.04 = 7,018.82 : x
2. Step 2: Convert to fraction form
   21,063.76/31,585.04 = 7,018.82/x
3. Step 3: Cross multiply
   21,063.76x = 31,585.04 × 7,018.82
4. Step 4: Simplify right side
   21,063.76x = 221,689,710.45
5. Step 5: Solve for x
   x = 221,689,710.45/21,063.76
6. Step 6: Final answer
   x = 10,524.70