Finding the Fourth Proportional to 21,117.16, 31,682.76 and 10,022.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,117.16 : 31,682.76 = 10,022.50 : x
2. Step 2: Convert to fraction form
   21,117.16/31,682.76 = 10,022.50/x
3. Step 3: Cross multiply
   21,117.16x = 31,682.76 × 10,022.50
4. Step 4: Simplify right side
   21,117.16x = 317,540,462.10
5. Step 5: Solve for x
   x = 317,540,462.10/21,117.16
6. Step 6: Final answer
   x = 15,037.08