Finding the Fourth Proportional to 7,111.72, 10,664.06 and 2,180.17

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.72 : 10,664.06 = 2,180.17 : x
2. Step 2: Convert to fraction form
   7,111.72/10,664.06 = 2,180.17/x
3. Step 3: Cross multiply
   7,111.72x = 10,664.06 × 2,180.17
4. Step 4: Simplify right side
   7,111.72x = 23,249,463.69
5. Step 5: Solve for x
   x = 23,249,463.69/7,111.72
6. Step 6: Final answer
   x = 3,269.18