Finding the Fourth Proportional to 17,997.78, 24,802.56 and 12,953.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,997.78 : 24,802.56 = 12,953.10 : x
2. Step 2: Convert to fraction form
   17,997.78/24,802.56 = 12,953.10/x
3. Step 3: Cross multiply
   17,997.78x = 24,802.56 × 12,953.10
4. Step 4: Simplify right side
   17,997.78x = 321,270,039.94
5. Step 5: Solve for x
   x = 321,270,039.94/17,997.78
6. Step 6: Final answer
   x = 17,850.54