Finding the Fourth Proportional to 15,986.06, 22,061.39 and 8,912.94

Step by Step Solution

1. Step 1: Write the proportion equation
   15,986.06 : 22,061.39 = 8,912.94 : x
2. Step 2: Convert to fraction form
   15,986.06/22,061.39 = 8,912.94/x
3. Step 3: Cross multiply
   15,986.06x = 22,061.39 × 8,912.94
4. Step 4: Simplify right side
   15,986.06x = 196,631,800.82
5. Step 5: Solve for x
   x = 196,631,800.82/15,986.06
6. Step 6: Final answer
   x = 12,300.21