Finding the Fourth Proportional to 6,523.56, 9,786.18 and 2,139.48

Step by Step Solution

1. Step 1: Write the proportion equation
   6,523.56 : 9,786.18 = 2,139.48 : x
2. Step 2: Convert to fraction form
   6,523.56/9,786.18 = 2,139.48/x
3. Step 3: Cross multiply
   6,523.56x = 9,786.18 × 2,139.48
4. Step 4: Simplify right side
   6,523.56x = 20,937,336.39
5. Step 5: Solve for x
   x = 20,937,336.39/6,523.56
6. Step 6: Final answer
   x = 3,209.50