Finding the Fourth Proportional to 13,760.74, 20,647.94 and 5,446.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,760.74 : 20,647.94 = 5,446.72 : x
2. Step 2: Convert to fraction form
   13,760.74/20,647.94 = 5,446.72/x
3. Step 3: Cross multiply
   13,760.74x = 20,647.94 × 5,446.72
4. Step 4: Simplify right side
   13,760.74x = 112,463,503.58
5. Step 5: Solve for x
   x = 112,463,503.58/13,760.74
6. Step 6: Final answer
   x = 8,172.78