Finding the Fourth Proportional to 3,698.56, 5,526.20 and 3,569.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.56 : 5,526.20 = 3,569.40 : x
2. Step 2: Convert to fraction form
   3,698.56/5,526.20 = 3,569.40/x
3. Step 3: Cross multiply
   3,698.56x = 5,526.20 × 3,569.40
4. Step 4: Simplify right side
   3,698.56x = 19,725,218.28
5. Step 5: Solve for x
   x = 19,725,218.28/3,698.56
6. Step 6: Final answer
   x = 5,333.22