Finding the Fourth Proportional to 19,874.51, 27,427.56 and 10,921.94

Step by Step Solution

1. Step 1: Write the proportion equation
   19,874.51 : 27,427.56 = 10,921.94 : x
2. Step 2: Convert to fraction form
   19,874.51/27,427.56 = 10,921.94/x
3. Step 3: Cross multiply
   19,874.51x = 27,427.56 × 10,921.94
4. Step 4: Simplify right side
   19,874.51x = 299,562,150.86
5. Step 5: Solve for x
   x = 299,562,150.86/19,874.51
6. Step 6: Final answer
   x = 15,072.68