Finding the Fourth Proportional to 12,662.76, 18,995.91 and 3,898.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,662.76 : 18,995.91 = 3,898.38 : x
2. Step 2: Convert to fraction form
   12,662.76/18,995.91 = 3,898.38/x
3. Step 3: Cross multiply
   12,662.76x = 18,995.91 × 3,898.38
4. Step 4: Simplify right side
   12,662.76x = 74,053,275.63
5. Step 5: Solve for x
   x = 74,053,275.63/12,662.76
6. Step 6: Final answer
   x = 5,848.11