Finding the Fourth Proportional to 6,756.56, 10,134.72 and 2,139.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,756.56 : 10,134.72 = 2,139.56 : x
2. Step 2: Convert to fraction form
   6,756.56/10,134.72 = 2,139.56/x
3. Step 3: Cross multiply
   6,756.56x = 10,134.72 × 2,139.56
4. Step 4: Simplify right side
   6,756.56x = 21,683,841.52
5. Step 5: Solve for x
   x = 21,683,841.52/6,756.56
6. Step 6: Final answer
   x = 3,209.30