Finding the Fourth Proportional to 11,404.18, 17,108.10 and 3,611.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,404.18 : 17,108.10 = 3,611.20 : x
2. Step 2: Convert to fraction form
   11,404.18/17,108.10 = 3,611.20/x
3. Step 3: Cross multiply
   11,404.18x = 17,108.10 × 3,611.20
4. Step 4: Simplify right side
   11,404.18x = 61,780,770.72
5. Step 5: Solve for x
   x = 61,780,770.72/11,404.18
6. Step 6: Final answer
   x = 5,417.38