Finding the Fourth Proportional to 11,215.56, 16,825.82 and 3,424.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,215.56 : 16,825.82 = 3,424.98 : x
2. Step 2: Convert to fraction form
   11,215.56/16,825.82 = 3,424.98/x
3. Step 3: Cross multiply
   11,215.56x = 16,825.82 × 3,424.98
4. Step 4: Simplify right side
   11,215.56x = 57,628,079.86
5. Step 5: Solve for x
   x = 57,628,079.86/11,215.56
6. Step 6: Final answer
   x = 5,138.23