Finding the Fourth Proportional to 13,792.88, 20,689.04 and 3,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,792.88 : 20,689.04 = 3,404.72 : x
2. Step 2: Convert to fraction form
   13,792.88/20,689.04 = 3,404.72/x
3. Step 3: Cross multiply
   13,792.88x = 20,689.04 × 3,404.72
4. Step 4: Simplify right side
   13,792.88x = 70,440,388.27
5. Step 5: Solve for x
   x = 70,440,388.27/13,792.88
6. Step 6: Final answer
   x = 5,107.01