Finding the Fourth Proportional to 13,018.22, 19,519.38 and 5,111.26

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.22 : 19,519.38 = 5,111.26 : x
2. Step 2: Convert to fraction form
   13,018.22/19,519.38 = 5,111.26/x
3. Step 3: Cross multiply
   13,018.22x = 19,519.38 × 5,111.26
4. Step 4: Simplify right side
   13,018.22x = 99,768,626.22
5. Step 5: Solve for x
   x = 99,768,626.22/13,018.22
6. Step 6: Final answer
   x = 7,663.77