Finding the Fourth Proportional to 11,862.05, 16,369.63 and 7,147.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,862.05 : 16,369.63 = 7,147.25 : x
2. Step 2: Convert to fraction form
   11,862.05/16,369.63 = 7,147.25/x
3. Step 3: Cross multiply
   11,862.05x = 16,369.63 × 7,147.25
4. Step 4: Simplify right side
   11,862.05x = 116,997,738.30
5. Step 5: Solve for x
   x = 116,997,738.30/11,862.05
6. Step 6: Final answer
   x = 9,863.20