Finding the Fourth Proportional to 6,309.94, 8,707.52 and 3,621.60

Step by Step Solution

1. Step 1: Write the proportion equation
   6,309.94 : 8,707.52 = 3,621.60 : x
2. Step 2: Convert to fraction form
   6,309.94/8,707.52 = 3,621.60/x
3. Step 3: Cross multiply
   6,309.94x = 8,707.52 × 3,621.60
4. Step 4: Simplify right side
   6,309.94x = 31,535,154.43
5. Step 5: Solve for x
   x = 31,535,154.43/6,309.94
6. Step 6: Final answer
   x = 4,997.69