Finding the Fourth Proportional to 9,388.59, 12,956.88 and 5,409.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,388.59 : 12,956.88 = 5,409.96 : x
2. Step 2: Convert to fraction form
   9,388.59/12,956.88 = 5,409.96/x
3. Step 3: Cross multiply
   9,388.59x = 12,956.88 × 5,409.96
4. Step 4: Simplify right side
   9,388.59x = 70,096,110.69
5. Step 5: Solve for x
   x = 70,096,110.69/9,388.59
6. Step 6: Final answer
   x = 7,466.10