Finding the Fourth Proportional to 11,507.82, 17,283.60 and 7,155.68

Step by Step Solution

1. Step 1: Write the proportion equation
   11,507.82 : 17,283.60 = 7,155.68 : x
2. Step 2: Convert to fraction form
   11,507.82/17,283.60 = 7,155.68/x
3. Step 3: Cross multiply
   11,507.82x = 17,283.60 × 7,155.68
4. Step 4: Simplify right side
   11,507.82x = 123,675,910.85
5. Step 5: Solve for x
   x = 123,675,910.85/11,507.82
6. Step 6: Final answer
   x = 10,747.12