Finding the Fourth Proportional to 9,142.05, 12,614.78 and 5,108.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142.05 : 12,614.78 = 5,108.45 : x
2. Step 2: Convert to fraction form
   9,142.05/12,614.78 = 5,108.45/x
3. Step 3: Cross multiply
   9,142.05x = 12,614.78 × 5,108.45
4. Step 4: Simplify right side
   9,142.05x = 64,441,884.27
5. Step 5: Solve for x
   x = 64,441,884.27/9,142.05
6. Step 6: Final answer
   x = 7,048.95