Finding the Fourth Proportional to 8,738.16, 12,055.28 and 5,755.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,738.16 : 12,055.28 = 5,755.47 : x
2. Step 2: Convert to fraction form
   8,738.16/12,055.28 = 5,755.47/x
3. Step 3: Cross multiply
   8,738.16x = 12,055.28 × 5,755.47
4. Step 4: Simplify right side
   8,738.16x = 69,383,773.60
5. Step 5: Solve for x
   x = 69,383,773.60/8,738.16
6. Step 6: Final answer
   x = 7,940.32