Finding the Fourth Proportional to 19,597.72, 27,026.14 and 12,889

Step by Step Solution

1. Step 1: Write the proportion equation
   19,597.72 : 27,026.14 = 12,889 : x
2. Step 2: Convert to fraction form
   19,597.72/27,026.14 = 12,889/x
3. Step 3: Cross multiply
   19,597.72x = 27,026.14 × 12,889
4. Step 4: Simplify right side
   19,597.72x = 348,339,918.46
5. Step 5: Solve for x
   x = 348,339,918.46/19,597.72
6. Step 6: Final answer
   x = 17,774.51