Finding the Fourth Proportional to 22,960.16, 31,680.82 and 12,887.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,960.16 : 31,680.82 = 12,887.22 : x
2. Step 2: Convert to fraction form
   22,960.16/31,680.82 = 12,887.22/x
3. Step 3: Cross multiply
   22,960.16x = 31,680.82 × 12,887.22
4. Step 4: Simplify right side
   22,960.16x = 408,277,697.12
5. Step 5: Solve for x
   x = 408,277,697.12/22,960.16
6. Step 6: Final answer
   x = 17,782.01