Finding the Fourth Proportional to 13,018.16, 19,530.68 and 5,627.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.16 : 19,530.68 = 5,627.80 : x
2. Step 2: Convert to fraction form
   13,018.16/19,530.68 = 5,627.80/x
3. Step 3: Cross multiply
   13,018.16x = 19,530.68 × 5,627.80
4. Step 4: Simplify right side
   13,018.16x = 109,914,760.90
5. Step 5: Solve for x
   x = 109,914,760.90/13,018.16
6. Step 6: Final answer
   x = 8,443.19