Finding the Fourth Proportional to 7,322.78, 10,980.42 and 2,389.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,322.78 : 10,980.42 = 2,389.25 : x
2. Step 2: Convert to fraction form
   7,322.78/10,980.42 = 2,389.25/x
3. Step 3: Cross multiply
   7,322.78x = 10,980.42 × 2,389.25
4. Step 4: Simplify right side
   7,322.78x = 26,234,913.58
5. Step 5: Solve for x
   x = 26,234,913.58/7,322.78
6. Step 6: Final answer
   x = 3,582.65