Finding the Fourth Proportional to 8,215.80, 12,323.76 and 3,535.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,215.80 : 12,323.76 = 3,535.47 : x
2. Step 2: Convert to fraction form
   8,215.80/12,323.76 = 3,535.47/x
3. Step 3: Cross multiply
   8,215.80x = 12,323.76 × 3,535.47
4. Step 4: Simplify right side
   8,215.80x = 43,570,283.77
5. Step 5: Solve for x
   x = 43,570,283.77/8,215.80
6. Step 6: Final answer
   x = 5,303.23