Finding the Fourth Proportional to 8,771.72, 12,113.49 and 7,505.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,771.72 : 12,113.49 = 7,505.36 : x
2. Step 2: Convert to fraction form
   8,771.72/12,113.49 = 7,505.36/x
3. Step 3: Cross multiply
   8,771.72x = 12,113.49 × 7,505.36
4. Step 4: Simplify right side
   8,771.72x = 90,916,129.27
5. Step 5: Solve for x
   x = 90,916,129.27/8,771.72
6. Step 6: Final answer
   x = 10,364.69