Finding the Fourth Proportional to 22,814, 31,483.32 and 12,878

Step by Step Solution

1. Step 1: Write the proportion equation
   22,814 : 31,483.32 = 12,878 : x
2. Step 2: Convert to fraction form
   22,814/31,483.32 = 12,878/x
3. Step 3: Cross multiply
   22,814x = 31,483.32 × 12,878
4. Step 4: Simplify right side
   22,814x = 405,442,194.96
5. Step 5: Solve for x
   x = 405,442,194.96/22,814
6. Step 6: Final answer
   x = 17,771.64