Finding the Fourth Proportional to 10,604.72, 15,909.60 and 3,679.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,604.72 : 15,909.60 = 3,679.28 : x
2. Step 2: Convert to fraction form
   10,604.72/15,909.60 = 3,679.28/x
3. Step 3: Cross multiply
   10,604.72x = 15,909.60 × 3,679.28
4. Step 4: Simplify right side
   10,604.72x = 58,535,873.09
5. Step 5: Solve for x
   x = 58,535,873.09/10,604.72
6. Step 6: Final answer
   x = 5,519.79