Finding the Fourth Proportional to 13,778.73, 19,018.92 and 8,113.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,778.73 : 19,018.92 = 8,113.02 : x
2. Step 2: Convert to fraction form
   13,778.73/19,018.92 = 8,113.02/x
3. Step 3: Cross multiply
   13,778.73x = 19,018.92 × 8,113.02
4. Step 4: Simplify right side
   13,778.73x = 154,300,878.34
5. Step 5: Solve for x
   x = 154,300,878.34/13,778.73
6. Step 6: Final answer
   x = 11,198.48