Finding the Fourth Proportional to 10,431.24, 15,568.50 and 9,019.41

Step by Step Solution

1. Step 1: Write the proportion equation
   10,431.24 : 15,568.50 = 9,019.41 : x
2. Step 2: Convert to fraction form
   10,431.24/15,568.50 = 9,019.41/x
3. Step 3: Cross multiply
   10,431.24x = 15,568.50 × 9,019.41
4. Step 4: Simplify right side
   10,431.24x = 140,418,684.59
5. Step 5: Solve for x
   x = 140,418,684.59/10,431.24
6. Step 6: Final answer
   x = 13,461.36