Finding the Fourth Proportional to 12,469.37, 17,201.79 and 8,437.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,469.37 : 17,201.79 = 8,437.61 : x
2. Step 2: Convert to fraction form
   12,469.37/17,201.79 = 8,437.61/x
3. Step 3: Cross multiply
   12,469.37x = 17,201.79 × 8,437.61
4. Step 4: Simplify right side
   12,469.37x = 145,142,077.69
5. Step 5: Solve for x
   x = 145,142,077.69/12,469.37
6. Step 6: Final answer
   x = 11,639.88