Finding the Fourth Proportional to 12,544.88, 18,806.58 and 5,144.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,544.88 : 18,806.58 = 5,144.72 : x
2. Step 2: Convert to fraction form
   12,544.88/18,806.58 = 5,144.72/x
3. Step 3: Cross multiply
   12,544.88x = 18,806.58 × 5,144.72
4. Step 4: Simplify right side
   12,544.88x = 96,754,494.22
5. Step 5: Solve for x
   x = 96,754,494.22/12,544.88
6. Step 6: Final answer
   x = 7,712.67