Finding the Fourth Proportional to 22,846.41, 31,516.83 and 13,890.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,846.41 : 31,516.83 = 13,890.78 : x
2. Step 2: Convert to fraction form
   22,846.41/31,516.83 = 13,890.78/x
3. Step 3: Cross multiply
   22,846.41x = 31,516.83 × 13,890.78
4. Step 4: Simplify right side
   22,846.41x = 437,793,351.83
5. Step 5: Solve for x
   x = 437,793,351.83/22,846.41
6. Step 6: Final answer
   x = 19,162.46