Finding the Fourth Proportional to 19,401.72, 26,774.10 and 12,698.52

Step by Step Solution

1. Step 1: Write the proportion equation
   19,401.72 : 26,774.10 = 12,698.52 : x
2. Step 2: Convert to fraction form
   19,401.72/26,774.10 = 12,698.52/x
3. Step 3: Cross multiply
   19,401.72x = 26,774.10 × 12,698.52
4. Step 4: Simplify right side
   19,401.72x = 339,991,444.33
5. Step 5: Solve for x
   x = 339,991,444.33/19,401.72
6. Step 6: Final answer
   x = 17,523.78