Finding the Fourth Proportional to 7,139.52, 10,709.82 and 2,209.68

Step by Step Solution

1. Step 1: Write the proportion equation
   7,139.52 : 10,709.82 = 2,209.68 : x
2. Step 2: Convert to fraction form
   7,139.52/10,709.82 = 2,209.68/x
3. Step 3: Cross multiply
   7,139.52x = 10,709.82 × 2,209.68
4. Step 4: Simplify right side
   7,139.52x = 23,665,275.06
5. Step 5: Solve for x
   x = 23,665,275.06/7,139.52
6. Step 6: Final answer
   x = 3,314.69