Finding the Fourth Proportional to 11,436.76, 17,157.67 and 3,645.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,436.76 : 17,157.67 = 3,645.57 : x
2. Step 2: Convert to fraction form
   11,436.76/17,157.67 = 3,645.57/x
3. Step 3: Cross multiply
   11,436.76x = 17,157.67 × 3,645.57
4. Step 4: Simplify right side
   11,436.76x = 62,549,477.91
5. Step 5: Solve for x
   x = 62,549,477.91/11,436.76
6. Step 6: Final answer
   x = 5,469.16