Finding the Fourth Proportional to 21,827.98, 32,761.41 and 10,147.78

Step by Step Solution

1. Step 1: Write the proportion equation
   21,827.98 : 32,761.41 = 10,147.78 : x
2. Step 2: Convert to fraction form
   21,827.98/32,761.41 = 10,147.78/x
3. Step 3: Cross multiply
   21,827.98x = 32,761.41 × 10,147.78
4. Step 4: Simplify right side
   21,827.98x = 332,455,581.17
5. Step 5: Solve for x
   x = 332,455,581.17/21,827.98
6. Step 6: Final answer
   x = 15,230.71