Finding the Fourth Proportional to 6,317.79, 8,718.39 and 3,485.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,317.79 : 8,718.39 = 3,485.10 : x
2. Step 2: Convert to fraction form
   6,317.79/8,718.39 = 3,485.10/x
3. Step 3: Cross multiply
   6,317.79x = 8,718.39 × 3,485.10
4. Step 4: Simplify right side
   6,317.79x = 30,384,415.23
5. Step 5: Solve for x
   x = 30,384,415.23/6,317.79
6. Step 6: Final answer
   x = 4,809.35