Finding the Fourth Proportional to 12,291.02, 18,436.56 and 3,057.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,291.02 : 18,436.56 = 3,057.02 : x
2. Step 2: Convert to fraction form
   12,291.02/18,436.56 = 3,057.02/x
3. Step 3: Cross multiply
   12,291.02x = 18,436.56 × 3,057.02
4. Step 4: Simplify right side
   12,291.02x = 56,360,840.47
5. Step 5: Solve for x
   x = 56,360,840.47/12,291.02
6. Step 6: Final answer
   x = 4,585.53