Finding the Fourth Proportional to 9,354.05, 12,908.66 and 5,105.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.05 : 12,908.66 = 5,105.14 : x
2. Step 2: Convert to fraction form
   9,354.05/12,908.66 = 5,105.14/x
3. Step 3: Cross multiply
   9,354.05x = 12,908.66 × 5,105.14
4. Step 4: Simplify right side
   9,354.05x = 65,900,548.78
5. Step 5: Solve for x
   x = 65,900,548.78/9,354.05
6. Step 6: Final answer
   x = 7,045.14