Finding the Fourth Proportional to 23,825.31, 32,878.71 and 13,215.03

Step by Step Solution

1. Step 1: Write the proportion equation
   23,825.31 : 32,878.71 = 13,215.03 : x
2. Step 2: Convert to fraction form
   23,825.31/32,878.71 = 13,215.03/x
3. Step 3: Cross multiply
   23,825.31x = 32,878.71 × 13,215.03
4. Step 4: Simplify right side
   23,825.31x = 434,493,139.01
5. Step 5: Solve for x
   x = 434,493,139.01/23,825.31
6. Step 6: Final answer
   x = 18,236.62