Finding the Fourth Proportional to 22,770.18, 31,421.25 and 12,697.83

Step by Step Solution

1. Step 1: Write the proportion equation
   22,770.18 : 31,421.25 = 12,697.83 : x
2. Step 2: Convert to fraction form
   22,770.18/31,421.25 = 12,697.83/x
3. Step 3: Cross multiply
   22,770.18x = 31,421.25 × 12,697.83
4. Step 4: Simplify right side
   22,770.18x = 398,981,690.89
5. Step 5: Solve for x
   x = 398,981,690.89/22,770.18
6. Step 6: Final answer
   x = 17,522.11