Finding the Fourth Proportional to 6,402.25, 9,602.43 and 2,020.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,402.25 : 9,602.43 = 2,020.78 : x
2. Step 2: Convert to fraction form
   6,402.25/9,602.43 = 2,020.78/x
3. Step 3: Cross multiply
   6,402.25x = 9,602.43 × 2,020.78
4. Step 4: Simplify right side
   6,402.25x = 19,404,398.50
5. Step 5: Solve for x
   x = 19,404,398.50/6,402.25
6. Step 6: Final answer
   x = 3,030.87