Finding the Fourth Proportional to 11,345.18, 17,018.67 and 3,553.97

Step by Step Solution

1. Step 1: Write the proportion equation
   11,345.18 : 17,018.67 = 3,553.97 : x
2. Step 2: Convert to fraction form
   11,345.18/17,018.67 = 3,553.97/x
3. Step 3: Cross multiply
   11,345.18x = 17,018.67 × 3,553.97
4. Step 4: Simplify right side
   11,345.18x = 60,483,842.62
5. Step 5: Solve for x
   x = 60,483,842.62/11,345.18
6. Step 6: Final answer
   x = 5,331.24