Finding the Fourth Proportional to 22,881.68, 31,576.79 and 12,810.54

Step by Step Solution

1. Step 1: Write the proportion equation
   22,881.68 : 31,576.79 = 12,810.54 : x
2. Step 2: Convert to fraction form
   22,881.68/31,576.79 = 12,810.54/x
3. Step 3: Cross multiply
   22,881.68x = 31,576.79 × 12,810.54
4. Step 4: Simplify right side
   22,881.68x = 404,515,667.31
5. Step 5: Solve for x
   x = 404,515,667.31/22,881.68
6. Step 6: Final answer
   x = 17,678.59