Finding the Fourth Proportional to 10,661.58, 14,714.37 and 7,687.26

Step by Step Solution

1. Step 1: Write the proportion equation
   10,661.58 : 14,714.37 = 7,687.26 : x
2. Step 2: Convert to fraction form
   10,661.58/14,714.37 = 7,687.26/x
3. Step 3: Cross multiply
   10,661.58x = 14,714.37 × 7,687.26
4. Step 4: Simplify right side
   10,661.58x = 113,113,187.93
5. Step 5: Solve for x
   x = 113,113,187.93/10,661.58
6. Step 6: Final answer
   x = 10,609.42