Finding the Fourth Proportional to 6,499.54, 8,968.77 and 3,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.54 : 8,968.77 = 3,980.50 : x
2. Step 2: Convert to fraction form
   6,499.54/8,968.77 = 3,980.50/x
3. Step 3: Cross multiply
   6,499.54x = 8,968.77 × 3,980.50
4. Step 4: Simplify right side
   6,499.54x = 35,700,188.99
5. Step 5: Solve for x
   x = 35,700,188.99/6,499.54
6. Step 6: Final answer
   x = 5,492.73