Finding the Fourth Proportional to 11,443.72, 17,177.82 and 10,135.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,443.72 : 17,177.82 = 10,135.60 : x
2. Step 2: Convert to fraction form
   11,443.72/17,177.82 = 10,135.60/x
3. Step 3: Cross multiply
   11,443.72x = 17,177.82 × 10,135.60
4. Step 4: Simplify right side
   11,443.72x = 174,107,512.39
5. Step 5: Solve for x
   x = 174,107,512.39/11,443.72
6. Step 6: Final answer
   x = 15,214.24