Finding the Fourth Proportional to 9,388.86, 12,956.20 and 5,410.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,388.86 : 12,956.20 = 5,410.56 : x
2. Step 2: Convert to fraction form
   9,388.86/12,956.20 = 5,410.56/x
3. Step 3: Cross multiply
   9,388.86x = 12,956.20 × 5,410.56
4. Step 4: Simplify right side
   9,388.86x = 70,100,297.47
5. Step 5: Solve for x
   x = 70,100,297.47/9,388.86
6. Step 6: Final answer
   x = 7,466.33