Finding the Fourth Proportional to 20,618.02, 31,081.52 and 19,244.81

Step by Step Solution

1. Step 1: Write the proportion equation
   20,618.02 : 31,081.52 = 19,244.81 : x
2. Step 2: Convert to fraction form
   20,618.02/31,081.52 = 19,244.81/x
3. Step 3: Cross multiply
   20,618.02x = 31,081.52 × 19,244.81
4. Step 4: Simplify right side
   20,618.02x = 598,158,072.73
5. Step 5: Solve for x
   x = 598,158,072.73/20,618.02
6. Step 6: Final answer
   x = 29,011.43