Finding the Fourth Proportional to 8,555.37, 12,830.59 and 3,290.01

Step by Step Solution

1. Step 1: Write the proportion equation
   8,555.37 : 12,830.59 = 3,290.01 : x
2. Step 2: Convert to fraction form
   8,555.37/12,830.59 = 3,290.01/x
3. Step 3: Cross multiply
   8,555.37x = 12,830.59 × 3,290.01
4. Step 4: Simplify right side
   8,555.37x = 42,212,769.41
5. Step 5: Solve for x
   x = 42,212,769.41/8,555.37
6. Step 6: Final answer
   x = 4,934.07