Finding the Fourth Proportional to 8,136.53, 12,203.89 and 2,870.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,136.53 : 12,203.89 = 2,870.56 : x
2. Step 2: Convert to fraction form
   8,136.53/12,203.89 = 2,870.56/x
3. Step 3: Cross multiply
   8,136.53x = 12,203.89 × 2,870.56
4. Step 4: Simplify right side
   8,136.53x = 35,031,960.79
5. Step 5: Solve for x
   x = 35,031,960.79/8,136.53
6. Step 6: Final answer
   x = 4,305.51