Finding the Fourth Proportional to 10,747.72, 16,118.34 and 4,172.44

Step by Step Solution

1. Step 1: Write the proportion equation
   10,747.72 : 16,118.34 = 4,172.44 : x
2. Step 2: Convert to fraction form
   10,747.72/16,118.34 = 4,172.44/x
3. Step 3: Cross multiply
   10,747.72x = 16,118.34 × 4,172.44
4. Step 4: Simplify right side
   10,747.72x = 67,252,806.55
5. Step 5: Solve for x
   x = 67,252,806.55/10,747.72
6. Step 6: Final answer
   x = 6,257.40