Finding the Fourth Proportional to 17,972.31, 24,804.72 and 13,715.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,972.31 : 24,804.72 = 13,715.31 : x
2. Step 2: Convert to fraction form
   17,972.31/24,804.72 = 13,715.31/x
3. Step 3: Cross multiply
   17,972.31x = 24,804.72 × 13,715.31
4. Step 4: Simplify right side
   17,972.31x = 340,204,424.26
5. Step 5: Solve for x
   x = 340,204,424.26/17,972.31
6. Step 6: Final answer
   x = 18,929.37