Finding the Fourth Proportional to 9,530.10, 13,225.45 and 9,141.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,530.10 : 13,225.45 = 9,141.30 : x
2. Step 2: Convert to fraction form
   9,530.10/13,225.45 = 9,141.30/x
3. Step 3: Cross multiply
   9,530.10x = 13,225.45 × 9,141.30
4. Step 4: Simplify right side
   9,530.10x = 120,897,806.09
5. Step 5: Solve for x
   x = 120,897,806.09/9,530.10
6. Step 6: Final answer
   x = 12,685.89