Finding the Fourth Proportional to 13,843.88, 19,105.57 and 7,877.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,843.88 : 19,105.57 = 7,877.47 : x
2. Step 2: Convert to fraction form
   13,843.88/19,105.57 = 7,877.47/x
3. Step 3: Cross multiply
   13,843.88x = 19,105.57 × 7,877.47
4. Step 4: Simplify right side
   13,843.88x = 150,503,554.51
5. Step 5: Solve for x
   x = 150,503,554.51/13,843.88
6. Step 6: Final answer
   x = 10,871.49