Finding the Fourth Proportional to 10,401.12, 15,607.82 and 5,471.14

Step by Step Solution

1. Step 1: Write the proportion equation
   10,401.12 : 15,607.82 = 5,471.14 : x
2. Step 2: Convert to fraction form
   10,401.12/15,607.82 = 5,471.14/x
3. Step 3: Cross multiply
   10,401.12x = 15,607.82 × 5,471.14
4. Step 4: Simplify right side
   10,401.12x = 85,392,568.31
5. Step 5: Solve for x
   x = 85,392,568.31/10,401.12
6. Step 6: Final answer
   x = 8,209.94