Finding the Fourth Proportional to 12,386.72, 17,101.68 and 7,676

Step by Step Solution

1. Step 1: Write the proportion equation
   12,386.72 : 17,101.68 = 7,676 : x
2. Step 2: Convert to fraction form
   12,386.72/17,101.68 = 7,676/x
3. Step 3: Cross multiply
   12,386.72x = 17,101.68 × 7,676
4. Step 4: Simplify right side
   12,386.72x = 131,272,495.68
5. Step 5: Solve for x
   x = 131,272,495.68/12,386.72
6. Step 6: Final answer
   x = 10,597.84