Finding the Fourth Proportional to 3,643.32, 5,042.22 and 3,555.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,643.32 : 5,042.22 = 3,555.96 : x
2. Step 2: Convert to fraction form
   3,643.32/5,042.22 = 3,555.96/x
3. Step 3: Cross multiply
   3,643.32x = 5,042.22 × 3,555.96
4. Step 4: Simplify right side
   3,643.32x = 17,929,932.63
5. Step 5: Solve for x
   x = 17,929,932.63/3,643.32
6. Step 6: Final answer
   x = 4,921.32