Finding the Fourth Proportional to 19,606.72, 27,038.56 and 12,898

Step by Step Solution

1. Step 1: Write the proportion equation
   19,606.72 : 27,038.56 = 12,898 : x
2. Step 2: Convert to fraction form
   19,606.72/27,038.56 = 12,898/x
3. Step 3: Cross multiply
   19,606.72x = 27,038.56 × 12,898
4. Step 4: Simplify right side
   19,606.72x = 348,743,346.88
5. Step 5: Solve for x
   x = 348,743,346.88/19,606.72
6. Step 6: Final answer
   x = 17,786.93