Finding the Fourth Proportional to 10,401.67, 14,354.29 and 5,621.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,401.67 : 14,354.29 = 5,621.61 : x
2. Step 2: Convert to fraction form
   10,401.67/14,354.29 = 5,621.61/x
3. Step 3: Cross multiply
   10,401.67x = 14,354.29 × 5,621.61
4. Step 4: Simplify right side
   10,401.67x = 80,694,120.33
5. Step 5: Solve for x
   x = 80,694,120.33/10,401.67
6. Step 6: Final answer
   x = 7,757.81