Finding the Fourth Proportional to 28,379.59, 42,616.83 and 17,730.73

Step by Step Solution

1. Step 1: Write the proportion equation
   28,379.59 : 42,616.83 = 17,730.73 : x
2. Step 2: Convert to fraction form
   28,379.59/42,616.83 = 17,730.73/x
3. Step 3: Cross multiply
   28,379.59x = 42,616.83 × 17,730.73
4. Step 4: Simplify right side
   28,379.59x = 755,627,506.19
5. Step 5: Solve for x
   x = 755,627,506.19/28,379.59
6. Step 6: Final answer
   x = 26,625.74