Finding the Fourth Proportional to 13,877.68, 19,150.72 and 7,911.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,877.68 : 19,150.72 = 7,911.27 : x
2. Step 2: Convert to fraction form
   13,877.68/19,150.72 = 7,911.27/x
3. Step 3: Cross multiply
   13,877.68x = 19,150.72 × 7,911.27
4. Step 4: Simplify right side
   13,877.68x = 151,506,458.85
5. Step 5: Solve for x
   x = 151,506,458.85/13,877.68
6. Step 6: Final answer
   x = 10,917.28