Finding the Fourth Proportional to 3,552.29, 5,300.63 and 3,531.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,552.29 : 5,300.63 = 3,531.78 : x
2. Step 2: Convert to fraction form
   3,552.29/5,300.63 = 3,531.78/x
3. Step 3: Cross multiply
   3,552.29x = 5,300.63 × 3,531.78
4. Step 4: Simplify right side
   3,552.29x = 18,720,641.36
5. Step 5: Solve for x
   x = 18,720,641.36/3,552.29
6. Step 6: Final answer
   x = 5,270.03