Finding the Fourth Proportional to 11,680.54, 17,520.24 and 3,360.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,680.54 : 17,520.24 = 3,360.50 : x
2. Step 2: Convert to fraction form
   11,680.54/17,520.24 = 3,360.50/x
3. Step 3: Cross multiply
   11,680.54x = 17,520.24 × 3,360.50
4. Step 4: Simplify right side
   11,680.54x = 58,876,766.52
5. Step 5: Solve for x
   x = 58,876,766.52/11,680.54
6. Step 6: Final answer
   x = 5,040.59