Finding the Fourth Proportional to 22,787, 31,446.06 and 12,851

Step by Step Solution

1. Step 1: Write the proportion equation
   22,787 : 31,446.06 = 12,851 : x
2. Step 2: Convert to fraction form
   22,787/31,446.06 = 12,851/x
3. Step 3: Cross multiply
   22,787x = 31,446.06 × 12,851
4. Step 4: Simplify right side
   22,787x = 404,113,317.06
5. Step 5: Solve for x
   x = 404,113,317.06/22,787
6. Step 6: Final answer
   x = 17,734.38