Finding the Fourth Proportional to 22,719, 31,354.14 and 12,784.92

Step by Step Solution

1. Step 1: Write the proportion equation
   22,719 : 31,354.14 = 12,784.92 : x
2. Step 2: Convert to fraction form
   22,719/31,354.14 = 12,784.92/x
3. Step 3: Cross multiply
   22,719x = 31,354.14 × 12,784.92
4. Step 4: Simplify right side
   22,719x = 400,860,171.57
5. Step 5: Solve for x
   x = 400,860,171.57/22,719
6. Step 6: Final answer
   x = 17,644.27