Finding the Fourth Proportional to 31,293.72, 43,185.78 and 18,716.04

Step by Step Solution

1. Step 1: Write the proportion equation
   31,293.72 : 43,185.78 = 18,716.04 : x
2. Step 2: Convert to fraction form
   31,293.72/43,185.78 = 18,716.04/x
3. Step 3: Cross multiply
   31,293.72x = 43,185.78 × 18,716.04
4. Step 4: Simplify right side
   31,293.72x = 808,266,785.91
5. Step 5: Solve for x
   x = 808,266,785.91/31,293.72
6. Step 6: Final answer
   x = 25,828.40