Finding the Fourth Proportional to 21,401.67, 32,073.34 and 10,307.55

Step by Step Solution

1. Step 1: Write the proportion equation
   21,401.67 : 32,073.34 = 10,307.55 : x
2. Step 2: Convert to fraction form
   21,401.67/32,073.34 = 10,307.55/x
3. Step 3: Cross multiply
   21,401.67x = 32,073.34 × 10,307.55
4. Step 4: Simplify right side
   21,401.67x = 330,597,555.72
5. Step 5: Solve for x
   x = 330,597,555.72/21,401.67
6. Step 6: Final answer
   x = 15,447.28