Finding the Fourth Proportional to 22,753.94, 31,431.10 and 20,631.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,753.94 : 31,431.10 = 20,631.86 : x
2. Step 2: Convert to fraction form
   22,753.94/31,431.10 = 20,631.86/x
3. Step 3: Cross multiply
   22,753.94x = 31,431.10 × 20,631.86
4. Step 4: Simplify right side
   22,753.94x = 648,482,054.85
5. Step 5: Solve for x
   x = 648,482,054.85/22,753.94
6. Step 6: Final answer
   x = 28,499.77