Finding the Fourth Proportional to 7,111.19, 10,666.39 and 2,180.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.19 : 10,666.39 = 2,180.82 : x
2. Step 2: Convert to fraction form
   7,111.19/10,666.39 = 2,180.82/x
3. Step 3: Cross multiply
   7,111.19x = 10,666.39 × 2,180.82
4. Step 4: Simplify right side
   7,111.19x = 23,261,455.28
5. Step 5: Solve for x
   x = 23,261,455.28/7,111.19
6. Step 6: Final answer
   x = 3,271.10