Finding the Fourth Proportional to 30,806.73, 42,518.52 and 17,381.79

Step by Step Solution

1. Step 1: Write the proportion equation
   30,806.73 : 42,518.52 = 17,381.79 : x
2. Step 2: Convert to fraction form
   30,806.73/42,518.52 = 17,381.79/x
3. Step 3: Cross multiply
   30,806.73x = 42,518.52 × 17,381.79
4. Step 4: Simplify right side
   30,806.73x = 739,047,985.75
5. Step 5: Solve for x
   x = 739,047,985.75/30,806.73
6. Step 6: Final answer
   x = 23,989.82