Finding the Fourth Proportional to 8,061.36, 12,090.56 and 3,380.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,061.36 : 12,090.56 = 3,380.12 : x
2. Step 2: Convert to fraction form
   8,061.36/12,090.56 = 3,380.12/x
3. Step 3: Cross multiply
   8,061.36x = 12,090.56 × 3,380.12
4. Step 4: Simplify right side
   8,061.36x = 40,867,543.67
5. Step 5: Solve for x
   x = 40,867,543.67/8,061.36
6. Step 6: Final answer
   x = 5,069.56