Finding the Fourth Proportional to 10,824.72, 16,236.76 and 3,428.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,824.72 : 16,236.76 = 3,428.16 : x
2. Step 2: Convert to fraction form
   10,824.72/16,236.76 = 3,428.16/x
3. Step 3: Cross multiply
   10,824.72x = 16,236.76 × 3,428.16
4. Step 4: Simplify right side
   10,824.72x = 55,662,211.16
5. Step 5: Solve for x
   x = 55,662,211.16/10,824.72
6. Step 6: Final answer
   x = 5,142.14