Finding the Fourth Proportional to 10,578.14, 15,868.57 and 3,555.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,578.14 : 15,868.57 = 3,555.12 : x
2. Step 2: Convert to fraction form
   10,578.14/15,868.57 = 3,555.12/x
3. Step 3: Cross multiply
   10,578.14x = 15,868.57 × 3,555.12
4. Step 4: Simplify right side
   10,578.14x = 56,414,661.69
5. Step 5: Solve for x
   x = 56,414,661.69/10,578.14
6. Step 6: Final answer
   x = 5,333.14