Finding the Fourth Proportional to 11,238.72, 16,858.56 and 3,446.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,238.72 : 16,858.56 = 3,446.72 : x
2. Step 2: Convert to fraction form
   11,238.72/16,858.56 = 3,446.72/x
3. Step 3: Cross multiply
   11,238.72x = 16,858.56 × 3,446.72
4. Step 4: Simplify right side
   11,238.72x = 58,106,735.92
5. Step 5: Solve for x
   x = 58,106,735.92/11,238.72
6. Step 6: Final answer
   x = 5,170.23