Finding the Fourth Proportional to 11,408.88, 17,113.94 and 3,618.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,408.88 : 17,113.94 = 3,618.30 : x
2. Step 2: Convert to fraction form
   11,408.88/17,113.94 = 3,618.30/x
3. Step 3: Cross multiply
   11,408.88x = 17,113.94 × 3,618.30
4. Step 4: Simplify right side
   11,408.88x = 61,923,428.76
5. Step 5: Solve for x
   x = 61,923,428.76/11,408.88
6. Step 6: Final answer
   x = 5,427.65