Finding the Fourth Proportional to 13,846.72, 19,105.91 and 7,878.03

Step by Step Solution

1. Step 1: Write the proportion equation
   13,846.72 : 19,105.91 = 7,878.03 : x
2. Step 2: Convert to fraction form
   13,846.72/19,105.91 = 7,878.03/x
3. Step 3: Cross multiply
   13,846.72x = 19,105.91 × 7,878.03
4. Step 4: Simplify right side
   13,846.72x = 150,516,797.24
5. Step 5: Solve for x
   x = 150,516,797.24/13,846.72
6. Step 6: Final answer
   x = 10,870.22