Finding the Fourth Proportional to 21,087.24, 31,632.22 and 10,554.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,087.24 : 31,632.22 = 10,554.10 : x
2. Step 2: Convert to fraction form
   21,087.24/31,632.22 = 10,554.10/x
3. Step 3: Cross multiply
   21,087.24x = 31,632.22 × 10,554.10
4. Step 4: Simplify right side
   21,087.24x = 333,849,547.21
5. Step 5: Solve for x
   x = 333,849,547.21/21,087.24
6. Step 6: Final answer
   x = 15,831.83