Finding the Fourth Proportional to 11,325.35, 16,990.49 and 3,427.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,325.35 : 16,990.49 = 3,427.72 : x
2. Step 2: Convert to fraction form
   11,325.35/16,990.49 = 3,427.72/x
3. Step 3: Cross multiply
   11,325.35x = 16,990.49 × 3,427.72
4. Step 4: Simplify right side
   11,325.35x = 58,238,608.48
5. Step 5: Solve for x
   x = 58,238,608.48/11,325.35
6. Step 6: Final answer
   x = 5,142.32