Finding the Fourth Proportional to 8,760.05, 12,094.67 and 5,407.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,760.05 : 12,094.67 = 5,407.78 : x
2. Step 2: Convert to fraction form
   8,760.05/12,094.67 = 5,407.78/x
3. Step 3: Cross multiply
   8,760.05x = 12,094.67 × 5,407.78
4. Step 4: Simplify right side
   8,760.05x = 65,405,345.30
5. Step 5: Solve for x
   x = 65,405,345.30/8,760.05
6. Step 6: Final answer
   x = 7,466.32