Finding the Fourth Proportional to 31,501.48, 43,478.32 and 18,081.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,501.48 : 43,478.32 = 18,081.80 : x
2. Step 2: Convert to fraction form
   31,501.48/43,478.32 = 18,081.80/x
3. Step 3: Cross multiply
   31,501.48x = 43,478.32 × 18,081.80
4. Step 4: Simplify right side
   31,501.48x = 786,166,286.58
5. Step 5: Solve for x
   x = 786,166,286.58/31,501.48
6. Step 6: Final answer
   x = 24,956.49