Finding the Fourth Proportional to 9,401.60, 12,969.62 and 7,908.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.60 : 12,969.62 = 7,908.98 : x
2. Step 2: Convert to fraction form
   9,401.60/12,969.62 = 7,908.98/x
3. Step 3: Cross multiply
   9,401.60x = 12,969.62 × 7,908.98
4. Step 4: Simplify right side
   9,401.60x = 102,576,390.45
5. Step 5: Solve for x
   x = 102,576,390.45/9,401.60
6. Step 6: Final answer
   x = 10,910.52