Finding the Fourth Proportional to 13,846.49, 19,107.54 and 7,878.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,846.49 : 19,107.54 = 7,878.72 : x
2. Step 2: Convert to fraction form
   13,846.49/19,107.54 = 7,878.72/x
3. Step 3: Cross multiply
   13,846.49x = 19,107.54 × 7,878.72
4. Step 4: Simplify right side
   13,846.49x = 150,542,822.62
5. Step 5: Solve for x
   x = 150,542,822.62/13,846.49
6. Step 6: Final answer
   x = 10,872.27