Finding the Fourth Proportional to 19,061.30, 26,287.89 and 12,773.30

Step by Step Solution

1. Step 1: Write the proportion equation
   19,061.30 : 26,287.89 = 12,773.30 : x
2. Step 2: Convert to fraction form
   19,061.30/26,287.89 = 12,773.30/x
3. Step 3: Cross multiply
   19,061.30x = 26,287.89 × 12,773.30
4. Step 4: Simplify right side
   19,061.30x = 335,783,105.34
5. Step 5: Solve for x
   x = 335,783,105.34/19,061.30
6. Step 6: Final answer
   x = 17,615.96