Finding the Fourth Proportional to 21,112.12, 31,672.50 and 7,073.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,112.12 : 31,672.50 = 7,073.56 : x
2. Step 2: Convert to fraction form
   21,112.12/31,672.50 = 7,073.56/x
3. Step 3: Cross multiply
   21,112.12x = 31,672.50 × 7,073.56
4. Step 4: Simplify right side
   21,112.12x = 224,037,329.10
5. Step 5: Solve for x
   x = 224,037,329.10/21,112.12
6. Step 6: Final answer
   x = 10,611.79