Finding the Fourth Proportional to 9,388.09, 12,956.19 and 5,409.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,388.09 : 12,956.19 = 5,409.46 : x
2. Step 2: Convert to fraction form
   9,388.09/12,956.19 = 5,409.46/x
3. Step 3: Cross multiply
   9,388.09x = 12,956.19 × 5,409.46
4. Step 4: Simplify right side
   9,388.09x = 70,085,914.59
5. Step 5: Solve for x
   x = 70,085,914.59/9,388.09
6. Step 6: Final answer
   x = 7,465.41