Finding the Fourth Proportional to 10,402.28, 15,607.31 and 5,401.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,402.28 : 15,607.31 = 5,401.53 : x
2. Step 2: Convert to fraction form
   10,402.28/15,607.31 = 5,401.53/x
3. Step 3: Cross multiply
   10,402.28x = 15,607.31 × 5,401.53
4. Step 4: Simplify right side
   10,402.28x = 84,303,353.18
5. Step 5: Solve for x
   x = 84,303,353.18/10,402.28
6. Step 6: Final answer
   x = 8,104.31