Finding the Fourth Proportional to 19,897.56, 27,447.72 and 12,341.28

Step by Step Solution

1. Step 1: Write the proportion equation
   19,897.56 : 27,447.72 = 12,341.28 : x
2. Step 2: Convert to fraction form
   19,897.56/27,447.72 = 12,341.28/x
3. Step 3: Cross multiply
   19,897.56x = 27,447.72 × 12,341.28
4. Step 4: Simplify right side
   19,897.56x = 338,739,997.88
5. Step 5: Solve for x
   x = 338,739,997.88/19,897.56
6. Step 6: Final answer
   x = 17,024.20