Finding the Fourth Proportional to 28,642.35, 39,524.39 and 17,892.05

Step by Step Solution

1. Step 1: Write the proportion equation
   28,642.35 : 39,524.39 = 17,892.05 : x
2. Step 2: Convert to fraction form
   28,642.35/39,524.39 = 17,892.05/x
3. Step 3: Cross multiply
   28,642.35x = 39,524.39 × 17,892.05
4. Step 4: Simplify right side
   28,642.35x = 707,172,382.28
5. Step 5: Solve for x
   x = 707,172,382.28/28,642.35
6. Step 6: Final answer
   x = 24,689.74