Finding the Fourth Proportional to 21,826.98, 32,759.91 and 10,146.78

Step by Step Solution

1. Step 1: Write the proportion equation
   21,826.98 : 32,759.91 = 10,146.78 : x
2. Step 2: Convert to fraction form
   21,826.98/32,759.91 = 10,146.78/x
3. Step 3: Cross multiply
   21,826.98x = 32,759.91 × 10,146.78
4. Step 4: Simplify right side
   21,826.98x = 332,407,599.59
5. Step 5: Solve for x
   x = 332,407,599.59/21,826.98
6. Step 6: Final answer
   x = 15,229.21