Finding the Fourth Proportional to 4,786.17, 7,168.86 and 2,315.81

Step by Step Solution

1. Step 1: Write the proportion equation
   4,786.17 : 7,168.86 = 2,315.81 : x
2. Step 2: Convert to fraction form
   4,786.17/7,168.86 = 2,315.81/x
3. Step 3: Cross multiply
   4,786.17x = 7,168.86 × 2,315.81
4. Step 4: Simplify right side
   4,786.17x = 16,601,681.83
5. Step 5: Solve for x
   x = 16,601,681.83/4,786.17
6. Step 6: Final answer
   x = 3,468.68