Finding the Fourth Proportional to 6,172.16, 8,517.59 and 3,519.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,172.16 : 8,517.59 = 3,519.50 : x
2. Step 2: Convert to fraction form
   6,172.16/8,517.59 = 3,519.50/x
3. Step 3: Cross multiply
   6,172.16x = 8,517.59 × 3,519.50
4. Step 4: Simplify right side
   6,172.16x = 29,977,597.82
5. Step 5: Solve for x
   x = 29,977,597.82/6,172.16
6. Step 6: Final answer
   x = 4,856.91