Finding the Fourth Proportional to 3,610.49, 5,389.61 and 3,339.95

Step by Step Solution

1. Step 1: Write the proportion equation
   3,610.49 : 5,389.61 = 3,339.95 : x
2. Step 2: Convert to fraction form
   3,610.49/5,389.61 = 3,339.95/x
3. Step 3: Cross multiply
   3,610.49x = 5,389.61 × 3,339.95
4. Step 4: Simplify right side
   3,610.49x = 18,000,984.27
5. Step 5: Solve for x
   x = 18,000,984.27/3,610.49
6. Step 6: Final answer
   x = 4,985.75