Finding the Fourth Proportional to 8,958.72, 12,362.05 and 5,181.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,958.72 : 12,362.05 = 5,181.32 : x
2. Step 2: Convert to fraction form
   8,958.72/12,362.05 = 5,181.32/x
3. Step 3: Cross multiply
   8,958.72x = 12,362.05 × 5,181.32
4. Step 4: Simplify right side
   8,958.72x = 64,051,736.91
5. Step 5: Solve for x
   x = 64,051,736.91/8,958.72
6. Step 6: Final answer
   x = 7,149.65