Finding the Fourth Proportional to 28,084.73, 42,136.20 and 8,363.45

Step by Step Solution

1. Step 1: Write the proportion equation
   28,084.73 : 42,136.20 = 8,363.45 : x
2. Step 2: Convert to fraction form
   28,084.73/42,136.20 = 8,363.45/x
3. Step 3: Cross multiply
   28,084.73x = 42,136.20 × 8,363.45
4. Step 4: Simplify right side
   28,084.73x = 352,404,001.89
5. Step 5: Solve for x
   x = 352,404,001.89/28,084.73
6. Step 6: Final answer
   x = 12,547.89