Finding the Fourth Proportional to 9,166.72, 12,650.72 and 5,187.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,166.72 : 12,650.72 = 5,187.84 : x
2. Step 2: Convert to fraction form
   9,166.72/12,650.72 = 5,187.84/x
3. Step 3: Cross multiply
   9,166.72x = 12,650.72 × 5,187.84
4. Step 4: Simplify right side
   9,166.72x = 65,629,911.24
5. Step 5: Solve for x
   x = 65,629,911.24/9,166.72
6. Step 6: Final answer
   x = 7,159.59