Finding the Fourth Proportional to 7,782.72, 11,674.03 and 3,620.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,782.72 : 11,674.03 = 3,620.42 : x
2. Step 2: Convert to fraction form
   7,782.72/11,674.03 = 3,620.42/x
3. Step 3: Cross multiply
   7,782.72x = 11,674.03 × 3,620.42
4. Step 4: Simplify right side
   7,782.72x = 42,264,891.69
5. Step 5: Solve for x
   x = 42,264,891.69/7,782.72
6. Step 6: Final answer
   x = 5,430.61