Finding the Fourth Proportional to 19,196.74, 26,483.69 and 12,739.41

Step by Step Solution

1. Step 1: Write the proportion equation
   19,196.74 : 26,483.69 = 12,739.41 : x
2. Step 2: Convert to fraction form
   19,196.74/26,483.69 = 12,739.41/x
3. Step 3: Cross multiply
   19,196.74x = 26,483.69 × 12,739.41
4. Step 4: Simplify right side
   19,196.74x = 337,386,675.06
5. Step 5: Solve for x
   x = 337,386,675.06/19,196.74
6. Step 6: Final answer
   x = 17,575.21