Finding the Fourth Proportional to 10,825.56, 16,237.42 and 3,428.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,825.56 : 16,237.42 = 3,428.94 : x
2. Step 2: Convert to fraction form
   10,825.56/16,237.42 = 3,428.94/x
3. Step 3: Cross multiply
   10,825.56x = 16,237.42 × 3,428.94
4. Step 4: Simplify right side
   10,825.56x = 55,677,138.93
5. Step 5: Solve for x
   x = 55,677,138.93/10,825.56
6. Step 6: Final answer
   x = 5,143.12