Finding the Fourth Proportional to 12,457.77, 18,686.59 and 3,097.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,457.77 : 18,686.59 = 3,097.73 : x
2. Step 2: Convert to fraction form
   12,457.77/18,686.59 = 3,097.73/x
3. Step 3: Cross multiply
   12,457.77x = 18,686.59 × 3,097.73
4. Step 4: Simplify right side
   12,457.77x = 57,886,049.41
5. Step 5: Solve for x
   x = 57,886,049.41/12,457.77
6. Step 6: Final answer
   x = 4,646.58