Finding the Fourth Proportional to 15,510.16, 21,391.59 and 10,132.19

Step by Step Solution

1. Step 1: Write the proportion equation
   15,510.16 : 21,391.59 = 10,132.19 : x
2. Step 2: Convert to fraction form
   15,510.16/21,391.59 = 10,132.19/x
3. Step 3: Cross multiply
   15,510.16x = 21,391.59 × 10,132.19
4. Step 4: Simplify right side
   15,510.16x = 216,743,665.54
5. Step 5: Solve for x
   x = 216,743,665.54/15,510.16
6. Step 6: Final answer
   x = 13,974.30