Finding the Fourth Proportional to 13,879.08, 19,150.86 and 7,910.85

Step by Step Solution

1. Step 1: Write the proportion equation
   13,879.08 : 19,150.86 = 7,910.85 : x
2. Step 2: Convert to fraction form
   13,879.08/19,150.86 = 7,910.85/x
3. Step 3: Cross multiply
   13,879.08x = 19,150.86 × 7,910.85
4. Step 4: Simplify right side
   13,879.08x = 151,499,580.83
5. Step 5: Solve for x
   x = 151,499,580.83/13,879.08
6. Step 6: Final answer
   x = 10,915.68