Finding the Fourth Proportional to 6,401.67, 9,602.55 and 2,019.57

Step by Step Solution

1. Step 1: Write the proportion equation
   6,401.67 : 9,602.55 = 2,019.57 : x
2. Step 2: Convert to fraction form
   6,401.67/9,602.55 = 2,019.57/x
3. Step 3: Cross multiply
   6,401.67x = 9,602.55 × 2,019.57
4. Step 4: Simplify right side
   6,401.67x = 19,393,021.90
5. Step 5: Solve for x
   x = 19,393,021.90/6,401.67
6. Step 6: Final answer
   x = 3,029.37