Finding the Fourth Proportional to 6,880.69, 10,321.23 and 1,686.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,880.69 : 10,321.23 = 1,686.56 : x
2. Step 2: Convert to fraction form
   6,880.69/10,321.23 = 1,686.56/x
3. Step 3: Cross multiply
   6,880.69x = 10,321.23 × 1,686.56
4. Step 4: Simplify right side
   6,880.69x = 17,407,373.67
5. Step 5: Solve for x
   x = 17,407,373.67/6,880.69
6. Step 6: Final answer
   x = 2,529.89