Finding the Fourth Proportional to 9,164.96, 12,645.72 and 5,187.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,164.96 : 12,645.72 = 5,187.04 : x
2. Step 2: Convert to fraction form
   9,164.96/12,645.72 = 5,187.04/x
3. Step 3: Cross multiply
   9,164.96x = 12,645.72 × 5,187.04
4. Step 4: Simplify right side
   9,164.96x = 65,593,855.47
5. Step 5: Solve for x
   x = 65,593,855.47/9,164.96
6. Step 6: Final answer
   x = 7,157.03