Finding the Fourth Proportional to 12,386.69, 17,096.67 and 7,607.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,386.69 : 17,096.67 = 7,607.78 : x
2. Step 2: Convert to fraction form
   12,386.69/17,096.67 = 7,607.78/x
3. Step 3: Cross multiply
   12,386.69x = 17,096.67 × 7,607.78
4. Step 4: Simplify right side
   12,386.69x = 130,067,618.61
5. Step 5: Solve for x
   x = 130,067,618.61/12,386.69
6. Step 6: Final answer
   x = 10,500.60