Finding the Fourth Proportional to 5,978.98, 8,251.73 and 3,621.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978.98 : 8,251.73 = 3,621.12 : x
2. Step 2: Convert to fraction form
   5,978.98/8,251.73 = 3,621.12/x
3. Step 3: Cross multiply
   5,978.98x = 8,251.73 × 3,621.12
4. Step 4: Simplify right side
   5,978.98x = 29,880,504.54
5. Step 5: Solve for x
   x = 29,880,504.54/5,978.98
6. Step 6: Final answer
   x = 4,997.59