Finding the Fourth Proportional to 9,395.19, 12,951.50 and 7,401.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,395.19 : 12,951.50 = 7,401.78 : x
2. Step 2: Convert to fraction form
   9,395.19/12,951.50 = 7,401.78/x
3. Step 3: Cross multiply
   9,395.19x = 12,951.50 × 7,401.78
4. Step 4: Simplify right side
   9,395.19x = 95,864,116.66
5. Step 5: Solve for x
   x = 95,864,116.66/9,395.19
6. Step 6: Final answer
   x = 10,203.53