Finding the Fourth Proportional to 10,721.78, 16,082.06 and 3,225.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,721.78 : 16,082.06 = 3,225.18 : x
2. Step 2: Convert to fraction form
   10,721.78/16,082.06 = 3,225.18/x
3. Step 3: Cross multiply
   10,721.78x = 16,082.06 × 3,225.18
4. Step 4: Simplify right side
   10,721.78x = 51,867,538.27
5. Step 5: Solve for x
   x = 51,867,538.27/10,721.78
6. Step 6: Final answer
   x = 4,837.59