Finding the Fourth Proportional to 13,540.50, 20,311.17 and 3,680.00

Step by Step Solution

1. Step 1: Write the proportion equation
   13,540.50 : 20,311.17 = 3,680.00 : x
2. Step 2: Convert to fraction form
   13,540.50/20,311.17 = 3,680.00/x
3. Step 3: Cross multiply
   13,540.50x = 20,311.17 × 3,680.00
4. Step 4: Simplify right side
   13,540.50x = 74,745,004.04
5. Step 5: Solve for x
   x = 74,745,004.04/13,540.50
6. Step 6: Final answer
   x = 5,520.11