Finding the Fourth Proportional to 12,411.69, 18,620.25 and 4,091.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,411.69 : 18,620.25 = 4,091.37 : x
2. Step 2: Convert to fraction form
   12,411.69/18,620.25 = 4,091.37/x
3. Step 3: Cross multiply
   12,411.69x = 18,620.25 × 4,091.37
4. Step 4: Simplify right side
   12,411.69x = 76,182,332.24
5. Step 5: Solve for x
   x = 76,182,332.24/12,411.69
6. Step 6: Final answer
   x = 6,137.95