Finding the Fourth Proportional to 21,810.72, 32,723.28 and 10,123.68

Step by Step Solution

1. Step 1: Write the proportion equation
   21,810.72 : 32,723.28 = 10,123.68 : x
2. Step 2: Convert to fraction form
   21,810.72/32,723.28 = 10,123.68/x
3. Step 3: Cross multiply
   21,810.72x = 32,723.28 × 10,123.68
4. Step 4: Simplify right side
   21,810.72x = 331,280,015.27
5. Step 5: Solve for x
   x = 331,280,015.27/21,810.72
6. Step 6: Final answer
   x = 15,188.86