Finding the Fourth Proportional to 8,019.48, 12,031.04 and 3,638.19

Step by Step Solution

1. Step 1: Write the proportion equation
   8,019.48 : 12,031.04 = 3,638.19 : x
2. Step 2: Convert to fraction form
   8,019.48/12,031.04 = 3,638.19/x
3. Step 3: Cross multiply
   8,019.48x = 12,031.04 × 3,638.19
4. Step 4: Simplify right side
   8,019.48x = 43,771,218.51
5. Step 5: Solve for x
   x = 43,771,218.51/8,019.48
6. Step 6: Final answer
   x = 5,458.11