Finding the Fourth Proportional to 22,947.82, 31,666.05 and 12,874.90

Step by Step Solution

1. Step 1: Write the proportion equation
   22,947.82 : 31,666.05 = 12,874.90 : x
2. Step 2: Convert to fraction form
   22,947.82/31,666.05 = 12,874.90/x
3. Step 3: Cross multiply
   22,947.82x = 31,666.05 × 12,874.90
4. Step 4: Simplify right side
   22,947.82x = 407,697,227.15
5. Step 5: Solve for x
   x = 407,697,227.15/22,947.82
6. Step 6: Final answer
   x = 17,766.27