Finding the Fourth Proportional to 6,457.28, 8,910.69 and 3,662.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,457.28 : 8,910.69 = 3,662.78 : x
2. Step 2: Convert to fraction form
   6,457.28/8,910.69 = 3,662.78/x
3. Step 3: Cross multiply
   6,457.28x = 8,910.69 × 3,662.78
4. Step 4: Simplify right side
   6,457.28x = 32,637,897.12
5. Step 5: Solve for x
   x = 32,637,897.12/6,457.28
6. Step 6: Final answer
   x = 5,054.43