Finding the Fourth Proportional to 8,061.28, 12,090.66 and 3,618.03

Step by Step Solution

1. Step 1: Write the proportion equation
   8,061.28 : 12,090.66 = 3,618.03 : x
2. Step 2: Convert to fraction form
   8,061.28/12,090.66 = 3,618.03/x
3. Step 3: Cross multiply
   8,061.28x = 12,090.66 × 3,618.03
4. Step 4: Simplify right side
   8,061.28x = 43,744,370.60
5. Step 5: Solve for x
   x = 43,744,370.60/8,061.28
6. Step 6: Final answer
   x = 5,426.48