Finding the Fourth Proportional to 3,978.59, 5,483.85 and 3,498.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.59 : 5,483.85 = 3,498.82 : x
2. Step 2: Convert to fraction form
   3,978.59/5,483.85 = 3,498.82/x
3. Step 3: Cross multiply
   3,978.59x = 5,483.85 × 3,498.82
4. Step 4: Simplify right side
   3,978.59x = 19,187,004.06
5. Step 5: Solve for x
   x = 19,187,004.06/3,978.59
6. Step 6: Final answer
   x = 4,822.56