Finding the Fourth Proportional to 9,128.04, 12,596.38 and 5,149

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.04 : 12,596.38 = 5,149 : x
2. Step 2: Convert to fraction form
   9,128.04/12,596.38 = 5,149/x
3. Step 3: Cross multiply
   9,128.04x = 12,596.38 × 5,149
4. Step 4: Simplify right side
   9,128.04x = 64,858,760.62
5. Step 5: Solve for x
   x = 64,858,760.62/9,128.04
6. Step 6: Final answer
   x = 7,105.44