Finding the Fourth Proportional to 10,963.30, 15,168.72 and 9,570.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,963.30 : 15,168.72 = 9,570.10 : x
2. Step 2: Convert to fraction form
   10,963.30/15,168.72 = 9,570.10/x
3. Step 3: Cross multiply
   10,963.30x = 15,168.72 × 9,570.10
4. Step 4: Simplify right side
   10,963.30x = 145,166,167.27
5. Step 5: Solve for x
   x = 145,166,167.27/10,963.30
6. Step 6: Final answer
   x = 13,241.10