Finding the Fourth Proportional to 15,697.89, 23,550.53 and 5,168.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,697.89 : 23,550.53 = 5,168.72 : x
2. Step 2: Convert to fraction form
   15,697.89/23,550.53 = 5,168.72/x
3. Step 3: Cross multiply
   15,697.89x = 23,550.53 × 5,168.72
4. Step 4: Simplify right side
   15,697.89x = 121,726,095.42
5. Step 5: Solve for x
   x = 121,726,095.42/15,697.89
6. Step 6: Final answer
   x = 7,754.30