Finding the Fourth Proportional to 21,101, 31,647.18 and 10,707.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,101 : 31,647.18 = 10,707.08 : x
2. Step 2: Convert to fraction form
   21,101/31,647.18 = 10,707.08/x
3. Step 3: Cross multiply
   21,101x = 31,647.18 × 10,707.08
4. Step 4: Simplify right side
   21,101x = 338,848,888.03
5. Step 5: Solve for x
   x = 338,848,888.03/21,101
6. Step 6: Final answer
   x = 16,058.43