Finding the Fourth Proportional to 7,144.34, 10,726.34 and 3,636.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,144.34 : 10,726.34 = 3,636.72 : x
2. Step 2: Convert to fraction form
   7,144.34/10,726.34 = 3,636.72/x
3. Step 3: Cross multiply
   7,144.34x = 10,726.34 × 3,636.72
4. Step 4: Simplify right side
   7,144.34x = 39,008,677.02
5. Step 5: Solve for x
   x = 39,008,677.02/7,144.34
6. Step 6: Final answer
   x = 5,460.09