Finding the Fourth Proportional to 9,128.34, 12,596.04 and 5,149.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.34 : 12,596.04 = 5,149.23 : x
2. Step 2: Convert to fraction form
   9,128.34/12,596.04 = 5,149.23/x
3. Step 3: Cross multiply
   9,128.34x = 12,596.04 × 5,149.23
4. Step 4: Simplify right side
   9,128.34x = 64,859,907.05
5. Step 5: Solve for x
   x = 64,859,907.05/9,128.34
6. Step 6: Final answer
   x = 7,105.33