Finding the Fourth Proportional to 3,669.76, 5,065.60 and 2,428.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669.76 : 5,065.60 = 2,428.16 : x
2. Step 2: Convert to fraction form
   3,669.76/5,065.60 = 2,428.16/x
3. Step 3: Cross multiply
   3,669.76x = 5,065.60 × 2,428.16
4. Step 4: Simplify right side
   3,669.76x = 12,300,087.30
5. Step 5: Solve for x
   x = 12,300,087.30/3,669.76
6. Step 6: Final answer
   x = 3,351.74