Finding the Fourth Proportional to 9,118.50, 12,576.48 and 5,760.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,118.50 : 12,576.48 = 5,760.09 : x
2. Step 2: Convert to fraction form
   9,118.50/12,576.48 = 5,760.09/x
3. Step 3: Cross multiply
   9,118.50x = 12,576.48 × 5,760.09
4. Step 4: Simplify right side
   9,118.50x = 72,441,656.68
5. Step 5: Solve for x
   x = 72,441,656.68/9,118.50
6. Step 6: Final answer
   x = 7,944.47