Finding the Fourth Proportional to 22,314.26, 30,790.25 and 12,881

Step by Step Solution

1. Step 1: Write the proportion equation
   22,314.26 : 30,790.25 = 12,881 : x
2. Step 2: Convert to fraction form
   22,314.26/30,790.25 = 12,881/x
3. Step 3: Cross multiply
   22,314.26x = 30,790.25 × 12,881
4. Step 4: Simplify right side
   22,314.26x = 396,609,210.25
5. Step 5: Solve for x
   x = 396,609,210.25/22,314.26
6. Step 6: Final answer
   x = 17,773.80