Finding the Fourth Proportional to 12,726.54, 17,559.45 and 7,419.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,726.54 : 17,559.45 = 7,419.42 : x
2. Step 2: Convert to fraction form
   12,726.54/17,559.45 = 7,419.42/x
3. Step 3: Cross multiply
   12,726.54x = 17,559.45 × 7,419.42
4. Step 4: Simplify right side
   12,726.54x = 130,280,934.52
5. Step 5: Solve for x
   x = 130,280,934.52/12,726.54
6. Step 6: Final answer
   x = 10,236.95