Finding the Fourth Proportional to 13,564.72, 20,345.46 and 3,704.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,564.72 : 20,345.46 = 3,704.86 : x
2. Step 2: Convert to fraction form
   13,564.72/20,345.46 = 3,704.86/x
3. Step 3: Cross multiply
   13,564.72x = 20,345.46 × 3,704.86
4. Step 4: Simplify right side
   13,564.72x = 75,377,080.94
5. Step 5: Solve for x
   x = 75,377,080.94/13,564.72
6. Step 6: Final answer
   x = 5,556.85