Finding the Fourth Proportional to 8,753.49, 12,076.38 and 5,390.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,753.49 : 12,076.38 = 5,390.48 : x
2. Step 2: Convert to fraction form
   8,753.49/12,076.38 = 5,390.48/x
3. Step 3: Cross multiply
   8,753.49x = 12,076.38 × 5,390.48
4. Step 4: Simplify right side
   8,753.49x = 65,097,515.05
5. Step 5: Solve for x
   x = 65,097,515.05/8,753.49
6. Step 6: Final answer
   x = 7,436.75