Finding the Fourth Proportional to 19,899.50, 27,463.95 and 12,846.42

Step by Step Solution

1. Step 1: Write the proportion equation
   19,899.50 : 27,463.95 = 12,846.42 : x
2. Step 2: Convert to fraction form
   19,899.50/27,463.95 = 12,846.42/x
3. Step 3: Cross multiply
   19,899.50x = 27,463.95 × 12,846.42
4. Step 4: Simplify right side
   19,899.50x = 352,813,436.56
5. Step 5: Solve for x
   x = 352,813,436.56/19,899.50
6. Step 6: Final answer
   x = 17,729.77