Finding the Fourth Proportional to 10,752.72, 16,128.84 and 2,961.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,752.72 : 16,128.84 = 2,961.60 : x
2. Step 2: Convert to fraction form
   10,752.72/16,128.84 = 2,961.60/x
3. Step 3: Cross multiply
   10,752.72x = 16,128.84 × 2,961.60
4. Step 4: Simplify right side
   10,752.72x = 47,767,172.54
5. Step 5: Solve for x
   x = 47,767,172.54/10,752.72
6. Step 6: Final answer
   x = 4,442.33