Finding the Fourth Proportional to 20,423.27, 30,634.61 and 5,631.86

Step by Step Solution

1. Step 1: Write the proportion equation
   20,423.27 : 30,634.61 = 5,631.86 : x
2. Step 2: Convert to fraction form
   20,423.27/30,634.61 = 5,631.86/x
3. Step 3: Cross multiply
   20,423.27x = 30,634.61 × 5,631.86
4. Step 4: Simplify right side
   20,423.27x = 172,529,883.10
5. Step 5: Solve for x
   x = 172,529,883.10/20,423.27
6. Step 6: Final answer
   x = 8,447.71