Finding the Fourth Proportional to 8,956.58, 12,362.01 and 5,231.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,956.58 : 12,362.01 = 5,231.30 : x
2. Step 2: Convert to fraction form
   8,956.58/12,362.01 = 5,231.30/x
3. Step 3: Cross multiply
   8,956.58x = 12,362.01 × 5,231.30
4. Step 4: Simplify right side
   8,956.58x = 64,669,382.91
5. Step 5: Solve for x
   x = 64,669,382.91/8,956.58
6. Step 6: Final answer
   x = 7,220.32