Finding the Fourth Proportional to 21,787.48, 30,065.78 and 12,096.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,787.48 : 30,065.78 = 12,096.34 : x
2. Step 2: Convert to fraction form
   21,787.48/30,065.78 = 12,096.34/x
3. Step 3: Cross multiply
   21,787.48x = 30,065.78 × 12,096.34
4. Step 4: Simplify right side
   21,787.48x = 363,685,852.32
5. Step 5: Solve for x
   x = 363,685,852.32/21,787.48
6. Step 6: Final answer
   x = 16,692.42