Finding the Fourth Proportional to 28,547.73, 42,827.89 and 8,556.42

Step by Step Solution

1. Step 1: Write the proportion equation
   28,547.73 : 42,827.89 = 8,556.42 : x
2. Step 2: Convert to fraction form
   28,547.73/42,827.89 = 8,556.42/x
3. Step 3: Cross multiply
   28,547.73x = 42,827.89 × 8,556.42
4. Step 4: Simplify right side
   28,547.73x = 366,453,414.55
5. Step 5: Solve for x
   x = 366,453,414.55/28,547.73
6. Step 6: Final answer
   x = 12,836.52