Finding the Fourth Proportional to 21,763.68, 30,019.56 and 17,039.76

Step by Step Solution

1. Step 1: Write the proportion equation
   21,763.68 : 30,019.56 = 17,039.76 : x
2. Step 2: Convert to fraction form
   21,763.68/30,019.56 = 17,039.76/x
3. Step 3: Cross multiply
   21,763.68x = 30,019.56 × 17,039.76
4. Step 4: Simplify right side
   21,763.68x = 511,526,097.71
5. Step 5: Solve for x
   x = 511,526,097.71/21,763.68
6. Step 6: Final answer
   x = 23,503.66