Finding the Fourth Proportional to 6,418.37, 8,852.29 and 3,900.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,418.37 : 8,852.29 = 3,900.42 : x
2. Step 2: Convert to fraction form
   6,418.37/8,852.29 = 3,900.42/x
3. Step 3: Cross multiply
   6,418.37x = 8,852.29 × 3,900.42
4. Step 4: Simplify right side
   6,418.37x = 34,527,639.21
5. Step 5: Solve for x
   x = 34,527,639.21/6,418.37
6. Step 6: Final answer
   x = 5,379.50