Finding the Fourth Proportional to 7,544.39, 11,321.78 and 3,389.05

Step by Step Solution

1. Step 1: Write the proportion equation
   7,544.39 : 11,321.78 = 3,389.05 : x
2. Step 2: Convert to fraction form
   7,544.39/11,321.78 = 3,389.05/x
3. Step 3: Cross multiply
   7,544.39x = 11,321.78 × 3,389.05
4. Step 4: Simplify right side
   7,544.39x = 38,370,075.72
5. Step 5: Solve for x
   x = 38,370,075.72/7,544.39
6. Step 6: Final answer
   x = 5,085.91