Finding the Fourth Proportional to 11,786.16, 17,683.20 and 7,398.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,786.16 : 17,683.20 = 7,398.48 : x
2. Step 2: Convert to fraction form
   11,786.16/17,683.20 = 7,398.48/x
3. Step 3: Cross multiply
   11,786.16x = 17,683.20 × 7,398.48
4. Step 4: Simplify right side
   11,786.16x = 130,828,801.54
5. Step 5: Solve for x
   x = 130,828,801.54/11,786.16
6. Step 6: Final answer
   x = 11,100.21