Finding the Fourth Proportional to 10,524.24, 15,785.82 and 3,128.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,524.24 : 15,785.82 = 3,128.76 : x
2. Step 2: Convert to fraction form
   10,524.24/15,785.82 = 3,128.76/x
3. Step 3: Cross multiply
   10,524.24x = 15,785.82 × 3,128.76
4. Step 4: Simplify right side
   10,524.24x = 49,390,042.18
5. Step 5: Solve for x
   x = 49,390,042.18/10,524.24
6. Step 6: Final answer
   x = 4,692.98