Finding the Fourth Proportional to 12,586.83, 17,369.89 and 6,921.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,586.83 : 17,369.89 = 6,921.94 : x
2. Step 2: Convert to fraction form
   12,586.83/17,369.89 = 6,921.94/x
3. Step 3: Cross multiply
   12,586.83x = 17,369.89 × 6,921.94
4. Step 4: Simplify right side
   12,586.83x = 120,233,336.39
5. Step 5: Solve for x
   x = 120,233,336.39/12,586.83
6. Step 6: Final answer
   x = 9,552.31