Finding the Fourth Proportional to 13,846.71, 19,107.59 and 7,878.03

Step by Step Solution

1. Step 1: Write the proportion equation
   13,846.71 : 19,107.59 = 7,878.03 : x
2. Step 2: Convert to fraction form
   13,846.71/19,107.59 = 7,878.03/x
3. Step 3: Cross multiply
   13,846.71x = 19,107.59 × 7,878.03
4. Step 4: Simplify right side
   13,846.71x = 150,530,127.86
5. Step 5: Solve for x
   x = 150,530,127.86/13,846.71
6. Step 6: Final answer
   x = 10,871.18