Finding the Fourth Proportional to 11,288.37, 15,580.54 and 7,511.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,288.37 : 15,580.54 = 7,511.69 : x
2. Step 2: Convert to fraction form
   11,288.37/15,580.54 = 7,511.69/x
3. Step 3: Cross multiply
   11,288.37x = 15,580.54 × 7,511.69
4. Step 4: Simplify right side
   11,288.37x = 117,036,234.85
5. Step 5: Solve for x
   x = 117,036,234.85/11,288.37
6. Step 6: Final answer
   x = 10,367.86