Finding the Fourth Proportional to 28,599.69, 42,874.16 and 10,817.93

Step by Step Solution

1. Step 1: Write the proportion equation
   28,599.69 : 42,874.16 = 10,817.93 : x
2. Step 2: Convert to fraction form
   28,599.69/42,874.16 = 10,817.93/x
3. Step 3: Cross multiply
   28,599.69x = 42,874.16 × 10,817.93
4. Step 4: Simplify right side
   28,599.69x = 463,809,714.78
5. Step 5: Solve for x
   x = 463,809,714.78/28,599.69
6. Step 6: Final answer
   x = 16,217.30