Finding the Fourth Proportional to 10,440.19, 15,656.38 and 4,198.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,440.19 : 15,656.38 = 4,198.10 : x
2. Step 2: Convert to fraction form
   10,440.19/15,656.38 = 4,198.10/x
3. Step 3: Cross multiply
   10,440.19x = 15,656.38 × 4,198.10
4. Step 4: Simplify right side
   10,440.19x = 65,726,983.72
5. Step 5: Solve for x
   x = 65,726,983.72/10,440.19
6. Step 6: Final answer
   x = 6,295.58