Finding the Fourth Proportional to 12,631.89, 18,946.58 and 3,866.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,631.89 : 18,946.58 = 3,866.88 : x
2. Step 2: Convert to fraction form
   12,631.89/18,946.58 = 3,866.88/x
3. Step 3: Cross multiply
   12,631.89x = 18,946.58 × 3,866.88
4. Step 4: Simplify right side
   12,631.89x = 73,264,131.94
5. Step 5: Solve for x
   x = 73,264,131.94/12,631.89
6. Step 6: Final answer
   x = 5,799.93