Finding the Fourth Proportional to 10,555.20, 15,830.64 and 3,630.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,555.20 : 15,830.64 = 3,630.24 : x
2. Step 2: Convert to fraction form
   10,555.20/15,830.64 = 3,630.24/x
3. Step 3: Cross multiply
   10,555.20x = 15,830.64 × 3,630.24
4. Step 4: Simplify right side
   10,555.20x = 57,469,022.55
5. Step 5: Solve for x
   x = 57,469,022.55/10,555.20
6. Step 6: Final answer
   x = 5,444.62