Finding the Fourth Proportional to 3,629.71, 5,419.91 and 3,531.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,629.71 : 5,419.91 = 3,531.30 : x
2. Step 2: Convert to fraction form
   3,629.71/5,419.91 = 3,531.30/x
3. Step 3: Cross multiply
   3,629.71x = 5,419.91 × 3,531.30
4. Step 4: Simplify right side
   3,629.71x = 19,139,328.18
5. Step 5: Solve for x
   x = 19,139,328.18/3,629.71
6. Step 6: Final answer
   x = 5,272.96