Finding the Fourth Proportional to 22,321.31, 30,783.23 and 14,775.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,321.31 : 30,783.23 = 14,775.15 : x
2. Step 2: Convert to fraction form
   22,321.31/30,783.23 = 14,775.15/x
3. Step 3: Cross multiply
   22,321.31x = 30,783.23 × 14,775.15
4. Step 4: Simplify right side
   22,321.31x = 454,826,766.86
5. Step 5: Solve for x
   x = 454,826,766.86/22,321.31
6. Step 6: Final answer
   x = 20,376.35