Finding the Fourth Proportional to 11,860.62, 16,365.33 and 7,145.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,860.62 : 16,365.33 = 7,145.16 : x
2. Step 2: Convert to fraction form
   11,860.62/16,365.33 = 7,145.16/x
3. Step 3: Cross multiply
   11,860.62x = 16,365.33 × 7,145.16
4. Step 4: Simplify right side
   11,860.62x = 116,932,901.30
5. Step 5: Solve for x
   x = 116,932,901.30/11,860.62
6. Step 6: Final answer
   x = 9,858.92