Finding the Fourth Proportional to 9,540.74, 13,172.61 and 5,961.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,540.74 : 13,172.61 = 5,961.15 : x
2. Step 2: Convert to fraction form
   9,540.74/13,172.61 = 5,961.15/x
3. Step 3: Cross multiply
   9,540.74x = 13,172.61 × 5,961.15
4. Step 4: Simplify right side
   9,540.74x = 78,523,904.10
5. Step 5: Solve for x
   x = 78,523,904.10/9,540.74
6. Step 6: Final answer
   x = 8,230.38