Finding the Fourth Proportional to 5,978.16, 8,250.60 and 3,621.60

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978.16 : 8,250.60 = 3,621.60 : x
2. Step 2: Convert to fraction form
   5,978.16/8,250.60 = 3,621.60/x
3. Step 3: Cross multiply
   5,978.16x = 8,250.60 × 3,621.60
4. Step 4: Simplify right side
   5,978.16x = 29,880,372.96
5. Step 5: Solve for x
   x = 29,880,372.96/5,978.16
6. Step 6: Final answer
   x = 4,998.26