Finding the Fourth Proportional to 21,449.40, 32,180.61 and 10,354.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,449.40 : 32,180.61 = 10,354.02 : x
2. Step 2: Convert to fraction form
   21,449.40/32,180.61 = 10,354.02/x
3. Step 3: Cross multiply
   21,449.40x = 32,180.61 × 10,354.02
4. Step 4: Simplify right side
   21,449.40x = 333,198,679.55
5. Step 5: Solve for x
   x = 333,198,679.55/21,449.40
6. Step 6: Final answer
   x = 15,534.17