Finding the Fourth Proportional to 23,431.40, 32,335.29 and 12,821.03

Step by Step Solution

1. Step 1: Write the proportion equation
   23,431.40 : 32,335.29 = 12,821.03 : x
2. Step 2: Convert to fraction form
   23,431.40/32,335.29 = 12,821.03/x
3. Step 3: Cross multiply
   23,431.40x = 32,335.29 × 12,821.03
4. Step 4: Simplify right side
   23,431.40x = 414,571,561.47
5. Step 5: Solve for x
   x = 414,571,561.47/23,431.40
6. Step 6: Final answer
   x = 17,693.00