Finding the Fourth Proportional to 21,892.86, 30,216.65 and 14,245.67

Step by Step Solution

1. Step 1: Write the proportion equation
   21,892.86 : 30,216.65 = 14,245.67 : x
2. Step 2: Convert to fraction form
   21,892.86/30,216.65 = 14,245.67/x
3. Step 3: Cross multiply
   21,892.86x = 30,216.65 × 14,245.67
4. Step 4: Simplify right side
   21,892.86x = 430,456,428.72
5. Step 5: Solve for x
   x = 430,456,428.72/21,892.86
6. Step 6: Final answer
   x = 19,661.96