Finding the Fourth Proportional to 15,844.73, 21,842.43 and 12,061.31

Step by Step Solution

1. Step 1: Write the proportion equation
   15,844.73 : 21,842.43 = 12,061.31 : x
2. Step 2: Convert to fraction form
   15,844.73/21,842.43 = 12,061.31/x
3. Step 3: Cross multiply
   15,844.73x = 21,842.43 × 12,061.31
4. Step 4: Simplify right side
   15,844.73x = 263,448,210.17
5. Step 5: Solve for x
   x = 263,448,210.17/15,844.73
6. Step 6: Final answer
   x = 16,626.87