Finding the Fourth Proportional to 11,328.60, 15,648.42 and 9,446.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,328.60 : 15,648.42 = 9,446.34 : x
2. Step 2: Convert to fraction form
   11,328.60/15,648.42 = 9,446.34/x
3. Step 3: Cross multiply
   11,328.60x = 15,648.42 × 9,446.34
4. Step 4: Simplify right side
   11,328.60x = 147,820,295.78
5. Step 5: Solve for x
   x = 147,820,295.78/11,328.60
6. Step 6: Final answer
   x = 13,048.42