Finding the Fourth Proportional to 7,112.72, 10,665.56 and 2,181.17

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112.72 : 10,665.56 = 2,181.17 : x
2. Step 2: Convert to fraction form
   7,112.72/10,665.56 = 2,181.17/x
3. Step 3: Cross multiply
   7,112.72x = 10,665.56 × 2,181.17
4. Step 4: Simplify right side
   7,112.72x = 23,263,399.51
5. Step 5: Solve for x
   x = 23,263,399.51/7,112.72
6. Step 6: Final answer
   x = 3,270.68