Finding the Fourth Proportional to 4,685.72, 6,465.30 and 2,796.80

Step by Step Solution

1. Step 1: Write the proportion equation
   4,685.72 : 6,465.30 = 2,796.80 : x
2. Step 2: Convert to fraction form
   4,685.72/6,465.30 = 2,796.80/x
3. Step 3: Cross multiply
   4,685.72x = 6,465.30 × 2,796.80
4. Step 4: Simplify right side
   4,685.72x = 18,082,151.04
5. Step 5: Solve for x
   x = 18,082,151.04/4,685.72
6. Step 6: Final answer
   x = 3,858.99