Finding the Fourth Proportional to 7,120.71, 10,677.56 and 2,189.03

Step by Step Solution

1. Step 1: Write the proportion equation
   7,120.71 : 10,677.56 = 2,189.03 : x
2. Step 2: Convert to fraction form
   7,120.71/10,677.56 = 2,189.03/x
3. Step 3: Cross multiply
   7,120.71x = 10,677.56 × 2,189.03
4. Step 4: Simplify right side
   7,120.71x = 23,373,434.83
5. Step 5: Solve for x
   x = 23,373,434.83/7,120.71
6. Step 6: Final answer
   x = 3,282.46