Finding the Fourth Proportional to 11,150.61, 15,379.79 and 9,469.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,150.61 : 15,379.79 = 9,469.37 : x
2. Step 2: Convert to fraction form
   11,150.61/15,379.79 = 9,469.37/x
3. Step 3: Cross multiply
   11,150.61x = 15,379.79 × 9,469.37
4. Step 4: Simplify right side
   11,150.61x = 145,636,797.79
5. Step 5: Solve for x
   x = 145,636,797.79/11,150.61
6. Step 6: Final answer
   x = 13,060.88