Finding the Fourth Proportional to 4,191.24, 6,238.98 and 4,128.96

Step by Step Solution

1. Step 1: Write the proportion equation
   4,191.24 : 6,238.98 = 4,128.96 : x
2. Step 2: Convert to fraction form
   4,191.24/6,238.98 = 4,128.96/x
3. Step 3: Cross multiply
   4,191.24x = 6,238.98 × 4,128.96
4. Step 4: Simplify right side
   4,191.24x = 25,760,498.86
5. Step 5: Solve for x
   x = 25,760,498.86/4,191.24
6. Step 6: Final answer
   x = 6,146.27