Finding the Fourth Proportional to 11,528.76, 17,249.39 and 7,135.32

Step by Step Solution

1. Step 1: Write the proportion equation
   11,528.76 : 17,249.39 = 7,135.32 : x
2. Step 2: Convert to fraction form
   11,528.76/17,249.39 = 7,135.32/x
3. Step 3: Cross multiply
   11,528.76x = 17,249.39 × 7,135.32
4. Step 4: Simplify right side
   11,528.76x = 123,079,881.78
5. Step 5: Solve for x
   x = 123,079,881.78/11,528.76
6. Step 6: Final answer
   x = 10,675.90