Finding the Fourth Proportional to 9,379.19, 12,941.37 and 5,399.26

Step by Step Solution

1. Step 1: Write the proportion equation
   9,379.19 : 12,941.37 = 5,399.26 : x
2. Step 2: Convert to fraction form
   9,379.19/12,941.37 = 5,399.26/x
3. Step 3: Cross multiply
   9,379.19x = 12,941.37 × 5,399.26
4. Step 4: Simplify right side
   9,379.19x = 69,873,789.03
5. Step 5: Solve for x
   x = 69,873,789.03/9,379.19
6. Step 6: Final answer
   x = 7,449.87