Finding the Fourth Proportional to 13,840.82, 19,100.22 and 7,872.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,840.82 : 19,100.22 = 7,872.49 : x
2. Step 2: Convert to fraction form
   13,840.82/19,100.22 = 7,872.49/x
3. Step 3: Cross multiply
   13,840.82x = 19,100.22 × 7,872.49
4. Step 4: Simplify right side
   13,840.82x = 150,366,195.45
5. Step 5: Solve for x
   x = 150,366,195.45/13,840.82
6. Step 6: Final answer
   x = 10,863.97