Finding the Fourth Proportional to 8,662.53, 12,925.76 and 8,133.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.53 : 12,925.76 = 8,133.55 : x
2. Step 2: Convert to fraction form
   8,662.53/12,925.76 = 8,133.55/x
3. Step 3: Cross multiply
   8,662.53x = 12,925.76 × 8,133.55
4. Step 4: Simplify right side
   8,662.53x = 105,132,315.25
5. Step 5: Solve for x
   x = 105,132,315.25/8,662.53
6. Step 6: Final answer
   x = 12,136.44