Finding the Fourth Proportional to 6,421.14, 8,860.89 and 3,588.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,421.14 : 8,860.89 = 3,588.50 : x
2. Step 2: Convert to fraction form
   6,421.14/8,860.89 = 3,588.50/x
3. Step 3: Cross multiply
   6,421.14x = 8,860.89 × 3,588.50
4. Step 4: Simplify right side
   6,421.14x = 31,797,339.37
5. Step 5: Solve for x
   x = 31,797,339.37/6,421.14
6. Step 6: Final answer
   x = 4,951.98