Finding the Fourth Proportional to 19,787.52, 27,336.24 and 12,997.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,787.52 : 27,336.24 = 12,997.56 : x
2. Step 2: Convert to fraction form
   19,787.52/27,336.24 = 12,997.56/x
3. Step 3: Cross multiply
   19,787.52x = 27,336.24 × 12,997.56
4. Step 4: Simplify right side
   19,787.52x = 355,304,419.57
5. Step 5: Solve for x
   x = 355,304,419.57/19,787.52
6. Step 6: Final answer
   x = 17,955.99