Finding the Fourth Proportional to 22,955.41, 31,686.83 and 13,531.87

Step by Step Solution

1. Step 1: Write the proportion equation
   22,955.41 : 31,686.83 = 13,531.87 : x
2. Step 2: Convert to fraction form
   22,955.41/31,686.83 = 13,531.87/x
3. Step 3: Cross multiply
   22,955.41x = 31,686.83 × 13,531.87
4. Step 4: Simplify right side
   22,955.41x = 428,782,064.27
5. Step 5: Solve for x
   x = 428,782,064.27/22,955.41
6. Step 6: Final answer
   x = 18,678.91