Finding the Fourth Proportional to 22,557.72, 31,132.98 and 12,995.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,557.72 : 31,132.98 = 12,995.76 : x
2. Step 2: Convert to fraction form
   22,557.72/31,132.98 = 12,995.76/x
3. Step 3: Cross multiply
   22,557.72x = 31,132.98 × 12,995.76
4. Step 4: Simplify right side
   22,557.72x = 404,596,736.16
5. Step 5: Solve for x
   x = 404,596,736.16/22,557.72
6. Step 6: Final answer
   x = 17,936.07