Finding the Fourth Proportional to 9,354.18, 12,908.73 and 5,105.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.18 : 12,908.73 = 5,105.23 : x
2. Step 2: Convert to fraction form
   9,354.18/12,908.73 = 5,105.23/x
3. Step 3: Cross multiply
   9,354.18x = 12,908.73 × 5,105.23
4. Step 4: Simplify right side
   9,354.18x = 65,902,022.53
5. Step 5: Solve for x
   x = 65,902,022.53/9,354.18
6. Step 6: Final answer
   x = 7,045.19