Finding the Fourth Proportional to 9,389.03, 12,958.25 and 5,409.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,389.03 : 12,958.25 = 5,409.50 : x
2. Step 2: Convert to fraction form
   9,389.03/12,958.25 = 5,409.50/x
3. Step 3: Cross multiply
   9,389.03x = 12,958.25 × 5,409.50
4. Step 4: Simplify right side
   9,389.03x = 70,097,561.54
5. Step 5: Solve for x
   x = 70,097,561.54/9,389.03
6. Step 6: Final answer
   x = 7,465.90