Finding the Fourth Proportional to 11,870.78, 16,382.10 and 7,679.02

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.78 : 16,382.10 = 7,679.02 : x
2. Step 2: Convert to fraction form
   11,870.78/16,382.10 = 7,679.02/x
3. Step 3: Cross multiply
   11,870.78x = 16,382.10 × 7,679.02
4. Step 4: Simplify right side
   11,870.78x = 125,798,473.54
5. Step 5: Solve for x
   x = 125,798,473.54/11,870.78
6. Step 6: Final answer
   x = 10,597.32