Finding the Fourth Proportional to 13,879.82, 19,156.29 and 10,918.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,879.82 : 19,156.29 = 10,918.10 : x
2. Step 2: Convert to fraction form
   13,879.82/19,156.29 = 10,918.10/x
3. Step 3: Cross multiply
   13,879.82x = 19,156.29 × 10,918.10
4. Step 4: Simplify right side
   13,879.82x = 209,150,289.85
5. Step 5: Solve for x
   x = 209,150,289.85/13,879.82
6. Step 6: Final answer
   x = 15,068.66