Finding the Fourth Proportional to 8,682.72, 13,029.52 and 5,402.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,682.72 : 13,029.52 = 5,402.22 : x
2. Step 2: Convert to fraction form
   8,682.72/13,029.52 = 5,402.22/x
3. Step 3: Cross multiply
   8,682.72x = 13,029.52 × 5,402.22
4. Step 4: Simplify right side
   8,682.72x = 70,388,333.53
5. Step 5: Solve for x
   x = 70,388,333.53/8,682.72
6. Step 6: Final answer
   x = 8,106.71