Finding the Fourth Proportional to 5,519.73, 7,617.15 and 4,109.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,519.73 : 7,617.15 = 4,109.72 : x
2. Step 2: Convert to fraction form
   5,519.73/7,617.15 = 4,109.72/x
3. Step 3: Cross multiply
   5,519.73x = 7,617.15 × 4,109.72
4. Step 4: Simplify right side
   5,519.73x = 31,304,315.61
5. Step 5: Solve for x
   x = 31,304,315.61/5,519.73
6. Step 6: Final answer
   x = 5,671.35