Finding the Fourth Proportional to 6,499.50, 8,969.43 and 4,639.74

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.50 : 8,969.43 = 4,639.74 : x
2. Step 2: Convert to fraction form
   6,499.50/8,969.43 = 4,639.74/x
3. Step 3: Cross multiply
   6,499.50x = 8,969.43 × 4,639.74
4. Step 4: Simplify right side
   6,499.50x = 41,615,823.15
5. Step 5: Solve for x
   x = 41,615,823.15/6,499.50
6. Step 6: Final answer
   x = 6,402.93