Finding the Fourth Proportional to 9,354.34, 12,908.59 and 5,105.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.34 : 12,908.59 = 5,105.30 : x
2. Step 2: Convert to fraction form
   9,354.34/12,908.59 = 5,105.30/x
3. Step 3: Cross multiply
   9,354.34x = 12,908.59 × 5,105.30
4. Step 4: Simplify right side
   9,354.34x = 65,902,147.22
5. Step 5: Solve for x
   x = 65,902,147.22/9,354.34
6. Step 6: Final answer
   x = 7,045.09