Finding the Fourth Proportional to 6,423.93, 8,864.34 and 3,591.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,423.93 : 8,864.34 = 3,591.42 : x
2. Step 2: Convert to fraction form
   6,423.93/8,864.34 = 3,591.42/x
3. Step 3: Cross multiply
   6,423.93x = 8,864.34 × 3,591.42
4. Step 4: Simplify right side
   6,423.93x = 31,835,567.96
5. Step 5: Solve for x
   x = 31,835,567.96/6,423.93
6. Step 6: Final answer
   x = 4,955.78