Finding the Fourth Proportional to 12,098.89, 18,145.09 and 3,331.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,098.89 : 18,145.09 = 3,331.72 : x
2. Step 2: Convert to fraction form
   12,098.89/18,145.09 = 3,331.72/x
3. Step 3: Cross multiply
   12,098.89x = 18,145.09 × 3,331.72
4. Step 4: Simplify right side
   12,098.89x = 60,454,386.10
5. Step 5: Solve for x
   x = 60,454,386.10/12,098.89
6. Step 6: Final answer
   x = 4,996.69