Finding the Fourth Proportional to 12,644.50, 17,449.41 and 7,055.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,644.50 : 17,449.41 = 7,055.50 : x
2. Step 2: Convert to fraction form
   12,644.50/17,449.41 = 7,055.50/x
3. Step 3: Cross multiply
   12,644.50x = 17,449.41 × 7,055.50
4. Step 4: Simplify right side
   12,644.50x = 123,114,312.26
5. Step 5: Solve for x
   x = 123,114,312.26/12,644.50
6. Step 6: Final answer
   x = 9,736.59