Finding the Fourth Proportional to 11,345.88, 17,019.42 and 3,555.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,345.88 : 17,019.42 = 3,555.30 : x
2. Step 2: Convert to fraction form
   11,345.88/17,019.42 = 3,555.30/x
3. Step 3: Cross multiply
   11,345.88x = 17,019.42 × 3,555.30
4. Step 4: Simplify right side
   11,345.88x = 60,509,143.93
5. Step 5: Solve for x
   x = 60,509,143.93/11,345.88
6. Step 6: Final answer
   x = 5,333.14