Finding the Fourth Proportional to 12,644.80, 17,449.82 and 7,055.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,644.80 : 17,449.82 = 7,055.80 : x
2. Step 2: Convert to fraction form
   12,644.80/17,449.82 = 7,055.80/x
3. Step 3: Cross multiply
   12,644.80x = 17,449.82 × 7,055.80
4. Step 4: Simplify right side
   12,644.80x = 123,122,439.96
5. Step 5: Solve for x
   x = 123,122,439.96/12,644.80
6. Step 6: Final answer
   x = 9,737.00