Finding the Fourth Proportional to 3,642.09, 5,026.10 and 2,070.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,642.09 : 5,026.10 = 2,070.20 : x
2. Step 2: Convert to fraction form
   3,642.09/5,026.10 = 2,070.20/x
3. Step 3: Cross multiply
   3,642.09x = 5,026.10 × 2,070.20
4. Step 4: Simplify right side
   3,642.09x = 10,404,996.74
5. Step 5: Solve for x
   x = 10,404,996.74/3,642.09
6. Step 6: Final answer
   x = 2,856.88