Finding the Fourth Proportional to 11,552.69, 15,947.28 and 7,786.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,552.69 : 15,947.28 = 7,786.60 : x
2. Step 2: Convert to fraction form
   11,552.69/15,947.28 = 7,786.60/x
3. Step 3: Cross multiply
   11,552.69x = 15,947.28 × 7,786.60
4. Step 4: Simplify right side
   11,552.69x = 124,175,050.58
5. Step 5: Solve for x
   x = 124,175,050.58/11,552.69
6. Step 6: Final answer
   x = 10,748.58