Finding the Fourth Proportional to 11,774.69, 17,658.39 and 3,453.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,774.69 : 17,658.39 = 3,453.15 : x
2. Step 2: Convert to fraction form
   11,774.69/17,658.39 = 3,453.15/x
3. Step 3: Cross multiply
   11,774.69x = 17,658.39 × 3,453.15
4. Step 4: Simplify right side
   11,774.69x = 60,977,069.43
5. Step 5: Solve for x
   x = 60,977,069.43/11,774.69
6. Step 6: Final answer
   x = 5,178.66