Finding the Fourth Proportional to 3,983.68, 5,977.86 and 3,556

Step by Step Solution

1. Step 1: Write the proportion equation
   3,983.68 : 5,977.86 = 3,556 : x
2. Step 2: Convert to fraction form
   3,983.68/5,977.86 = 3,556/x
3. Step 3: Cross multiply
   3,983.68x = 5,977.86 × 3,556
4. Step 4: Simplify right side
   3,983.68x = 21,257,270.16
5. Step 5: Solve for x
   x = 21,257,270.16/3,983.68
6. Step 6: Final answer
   x = 5,336.09