Finding the Fourth Proportional to 28,561.56, 39,419.31 and 17,808.18

Step by Step Solution

1. Step 1: Write the proportion equation
   28,561.56 : 39,419.31 = 17,808.18 : x
2. Step 2: Convert to fraction form
   28,561.56/39,419.31 = 17,808.18/x
3. Step 3: Cross multiply
   28,561.56x = 39,419.31 × 17,808.18
4. Step 4: Simplify right side
   28,561.56x = 701,986,097.61
5. Step 5: Solve for x
   x = 701,986,097.61/28,561.56
6. Step 6: Final answer
   x = 24,578.00