Finding the Fourth Proportional to 3,981.54, 5,498.53 and 3,280.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.54 : 5,498.53 = 3,280.34 : x
2. Step 2: Convert to fraction form
   3,981.54/5,498.53 = 3,280.34/x
3. Step 3: Cross multiply
   3,981.54x = 5,498.53 × 3,280.34
4. Step 4: Simplify right side
   3,981.54x = 18,037,047.90
5. Step 5: Solve for x
   x = 18,037,047.90/3,981.54
6. Step 6: Final answer
   x = 4,530.17