Finding the Fourth Proportional to 12,605.91, 18,911.67 and 3,841.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,605.91 : 18,911.67 = 3,841.50 : x
2. Step 2: Convert to fraction form
   12,605.91/18,911.67 = 3,841.50/x
3. Step 3: Cross multiply
   12,605.91x = 18,911.67 × 3,841.50
4. Step 4: Simplify right side
   12,605.91x = 72,649,180.31
5. Step 5: Solve for x
   x = 72,649,180.31/12,605.91
6. Step 6: Final answer
   x = 5,763.10