Finding the Fourth Proportional to 15,805.09, 21,812.17 and 9,092.82

Step by Step Solution

1. Step 1: Write the proportion equation
   15,805.09 : 21,812.17 = 9,092.82 : x
2. Step 2: Convert to fraction form
   15,805.09/21,812.17 = 9,092.82/x
3. Step 3: Cross multiply
   15,805.09x = 21,812.17 × 9,092.82
4. Step 4: Simplify right side
   15,805.09x = 198,334,112.89
5. Step 5: Solve for x
   x = 198,334,112.89/15,805.09
6. Step 6: Final answer
   x = 12,548.75