Finding the Fourth Proportional to 6,499.01, 8,968.73 and 3,980.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.01 : 8,968.73 = 3,980.20 : x
2. Step 2: Convert to fraction form
   6,499.01/8,968.73 = 3,980.20/x
3. Step 3: Cross multiply
   6,499.01x = 8,968.73 × 3,980.20
4. Step 4: Simplify right side
   6,499.01x = 35,697,296.82
5. Step 5: Solve for x
   x = 35,697,296.82/6,499.01
6. Step 6: Final answer
   x = 5,492.73