Finding the Fourth Proportional to 7,039.86, 10,563.31 and 3,290.07

Step by Step Solution

1. Step 1: Write the proportion equation
   7,039.86 : 10,563.31 = 3,290.07 : x
2. Step 2: Convert to fraction form
   7,039.86/10,563.31 = 3,290.07/x
3. Step 3: Cross multiply
   7,039.86x = 10,563.31 × 3,290.07
4. Step 4: Simplify right side
   7,039.86x = 34,754,013.64
5. Step 5: Solve for x
   x = 34,754,013.64/7,039.86
6. Step 6: Final answer
   x = 4,936.75