Finding the Fourth Proportional to 8,753.89, 12,076.92 and 5,390.87

Step by Step Solution

1. Step 1: Write the proportion equation
   8,753.89 : 12,076.92 = 5,390.87 : x
2. Step 2: Convert to fraction form
   8,753.89/12,076.92 = 5,390.87/x
3. Step 3: Cross multiply
   8,753.89x = 12,076.92 × 5,390.87
4. Step 4: Simplify right side
   8,753.89x = 65,105,105.72
5. Step 5: Solve for x
   x = 65,105,105.72/8,753.89
6. Step 6: Final answer
   x = 7,437.28