Finding the Fourth Proportional to 16,989.09, 25,484.51 and 5,142.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,989.09 : 25,484.51 = 5,142.56 : x
2. Step 2: Convert to fraction form
   16,989.09/25,484.51 = 5,142.56/x
3. Step 3: Cross multiply
   16,989.09x = 25,484.51 × 5,142.56
4. Step 4: Simplify right side
   16,989.09x = 131,055,468.61
5. Step 5: Solve for x
   x = 131,055,468.61/16,989.09
6. Step 6: Final answer
   x = 7,714.10