Finding the Fourth Proportional to 9,410.05, 12,986.01 and 5,161.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.05 : 12,986.01 = 5,161.52 : x
2. Step 2: Convert to fraction form
   9,410.05/12,986.01 = 5,161.52/x
3. Step 3: Cross multiply
   9,410.05x = 12,986.01 × 5,161.52
4. Step 4: Simplify right side
   9,410.05x = 67,027,550.34
5. Step 5: Solve for x
   x = 67,027,550.34/9,410.05
6. Step 6: Final answer
   x = 7,122.97