Finding the Fourth Proportional to 8,956.10, 12,357.46 and 5,419.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,956.10 : 12,357.46 = 5,419.24 : x
2. Step 2: Convert to fraction form
   8,956.10/12,357.46 = 5,419.24/x
3. Step 3: Cross multiply
   8,956.10x = 12,357.46 × 5,419.24
4. Step 4: Simplify right side
   8,956.10x = 66,968,041.53
5. Step 5: Solve for x
   x = 66,968,041.53/8,956.10
6. Step 6: Final answer
   x = 7,477.37