Finding the Fourth Proportional to 8,865.55, 12,242.37 and 8,445.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,865.55 : 12,242.37 = 8,445.43 : x
2. Step 2: Convert to fraction form
   8,865.55/12,242.37 = 8,445.43/x
3. Step 3: Cross multiply
   8,865.55x = 12,242.37 × 8,445.43
4. Step 4: Simplify right side
   8,865.55x = 103,392,078.87
5. Step 5: Solve for x
   x = 103,392,078.87/8,865.55
6. Step 6: Final answer
   x = 11,662.23