Finding the Fourth Proportional to 22,471.83, 31,012.55 and 12,914.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,471.83 : 31,012.55 = 12,914.78 : x
2. Step 2: Convert to fraction form
   22,471.83/31,012.55 = 12,914.78/x
3. Step 3: Cross multiply
   22,471.83x = 31,012.55 × 12,914.78
4. Step 4: Simplify right side
   22,471.83x = 400,520,260.49
5. Step 5: Solve for x
   x = 400,520,260.49/22,471.83
6. Step 6: Final answer
   x = 17,823.22