Finding the Fourth Proportional to 3,983.12, 5,498.60 and 2,390.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,983.12 : 5,498.60 = 2,390.56 : x
2. Step 2: Convert to fraction form
   3,983.12/5,498.60 = 2,390.56/x
3. Step 3: Cross multiply
   3,983.12x = 5,498.60 × 2,390.56
4. Step 4: Simplify right side
   3,983.12x = 13,144,733.22
5. Step 5: Solve for x
   x = 13,144,733.22/3,983.12
6. Step 6: Final answer
   x = 3,300.11