Finding the Fourth Proportional to 8,888.58, 12,258.27 and 7,401.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,888.58 : 12,258.27 = 7,401.42 : x
2. Step 2: Convert to fraction form
   8,888.58/12,258.27 = 7,401.42/x
3. Step 3: Cross multiply
   8,888.58x = 12,258.27 × 7,401.42
4. Step 4: Simplify right side
   8,888.58x = 90,728,604.74
5. Step 5: Solve for x
   x = 90,728,604.74/8,888.58
6. Step 6: Final answer
   x = 10,207.32