Finding the Fourth Proportional to 6,367.40, 8,789.46 and 4,131.80

Step by Step Solution

1. Step 1: Write the proportion equation
   6,367.40 : 8,789.46 = 4,131.80 : x
2. Step 2: Convert to fraction form
   6,367.40/8,789.46 = 4,131.80/x
3. Step 3: Cross multiply
   6,367.40x = 8,789.46 × 4,131.80
4. Step 4: Simplify right side
   6,367.40x = 36,316,290.83
5. Step 5: Solve for x
   x = 36,316,290.83/6,367.40
6. Step 6: Final answer
   x = 5,703.47