Finding the Fourth Proportional to 8,980.89, 13,471.56 and 3,057.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,980.89 : 13,471.56 = 3,057.78 : x
2. Step 2: Convert to fraction form
   8,980.89/13,471.56 = 3,057.78/x
3. Step 3: Cross multiply
   8,980.89x = 13,471.56 × 3,057.78
4. Step 4: Simplify right side
   8,980.89x = 41,193,066.74
5. Step 5: Solve for x
   x = 41,193,066.74/8,980.89
6. Step 6: Final answer
   x = 4,586.75