Finding the Fourth Proportional to 13,877.14, 19,150.78 and 7,909.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,877.14 : 19,150.78 = 7,909.37 : x
2. Step 2: Convert to fraction form
   13,877.14/19,150.78 = 7,909.37/x
3. Step 3: Cross multiply
   13,877.14x = 19,150.78 × 7,909.37
4. Step 4: Simplify right side
   13,877.14x = 151,470,528.83
5. Step 5: Solve for x
   x = 151,470,528.83/13,877.14
6. Step 6: Final answer
   x = 10,915.11