Finding the Fourth Proportional to 21,931.16, 32,901.60 and 10,238

Step by Step Solution

1. Step 1: Write the proportion equation
   21,931.16 : 32,901.60 = 10,238 : x
2. Step 2: Convert to fraction form
   21,931.16/32,901.60 = 10,238/x
3. Step 3: Cross multiply
   21,931.16x = 32,901.60 × 10,238
4. Step 4: Simplify right side
   21,931.16x = 336,846,580.80
5. Step 5: Solve for x
   x = 336,846,580.80/21,931.16
6. Step 6: Final answer
   x = 15,359.27