Finding the Fourth Proportional to 10,406.31, 14,360.72 and 6,686.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,406.31 : 14,360.72 = 6,686.79 : x
2. Step 2: Convert to fraction form
   10,406.31/14,360.72 = 6,686.79/x
3. Step 3: Cross multiply
   10,406.31x = 14,360.72 × 6,686.79
4. Step 4: Simplify right side
   10,406.31x = 96,027,118.89
5. Step 5: Solve for x
   x = 96,027,118.89/10,406.31
6. Step 6: Final answer
   x = 9,227.78