Finding the Fourth Proportional to 11,942.56, 17,913.78 and 3,057.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,942.56 : 17,913.78 = 3,057.88 : x
2. Step 2: Convert to fraction form
   11,942.56/17,913.78 = 3,057.88/x
3. Step 3: Cross multiply
   11,942.56x = 17,913.78 × 3,057.88
4. Step 4: Simplify right side
   11,942.56x = 54,778,189.59
5. Step 5: Solve for x
   x = 54,778,189.59/11,942.56
6. Step 6: Final answer
   x = 4,586.80