Finding the Fourth Proportional to 11,445.78, 17,171.56 and 3,654.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,445.78 : 17,171.56 = 3,654.60 : x
2. Step 2: Convert to fraction form
   11,445.78/17,171.56 = 3,654.60/x
3. Step 3: Cross multiply
   11,445.78x = 17,171.56 × 3,654.60
4. Step 4: Simplify right side
   11,445.78x = 62,755,183.18
5. Step 5: Solve for x
   x = 62,755,183.18/11,445.78
6. Step 6: Final answer
   x = 5,482.82