Finding the Fourth Proportional to 11,600.54, 17,401.76 and 3,280.63

Step by Step Solution

1. Step 1: Write the proportion equation
   11,600.54 : 17,401.76 = 3,280.63 : x
2. Step 2: Convert to fraction form
   11,600.54/17,401.76 = 3,280.63/x
3. Step 3: Cross multiply
   11,600.54x = 17,401.76 × 3,280.63
4. Step 4: Simplify right side
   11,600.54x = 57,088,735.91
5. Step 5: Solve for x
   x = 57,088,735.91/11,600.54
6. Step 6: Final answer
   x = 4,921.21