Finding the Fourth Proportional to 8,136.54, 12,201.59 and 2,870.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,136.54 : 12,201.59 = 2,870.42 : x
2. Step 2: Convert to fraction form
   8,136.54/12,201.59 = 2,870.42/x
3. Step 3: Cross multiply
   8,136.54x = 12,201.59 × 2,870.42
4. Step 4: Simplify right side
   8,136.54x = 35,023,634.14
5. Step 5: Solve for x
   x = 35,023,634.14/8,136.54
6. Step 6: Final answer
   x = 4,304.49