Finding the Fourth Proportional to 10,359.20, 15,540.83 and 4,118.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,359.20 : 15,540.83 = 4,118.15 : x
2. Step 2: Convert to fraction form
   10,359.20/15,540.83 = 4,118.15/x
3. Step 3: Cross multiply
   10,359.20x = 15,540.83 × 4,118.15
4. Step 4: Simplify right side
   10,359.20x = 63,999,469.06
5. Step 5: Solve for x
   x = 63,999,469.06/10,359.20
6. Step 6: Final answer
   x = 6,178.03