Finding the Fourth Proportional to 13,142.94, 18,134.55 and 7,552.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,142.94 : 18,134.55 = 7,552.86 : x
2. Step 2: Convert to fraction form
   13,142.94/18,134.55 = 7,552.86/x
3. Step 3: Cross multiply
   13,142.94x = 18,134.55 × 7,552.86
4. Step 4: Simplify right side
   13,142.94x = 136,967,717.31
5. Step 5: Solve for x
   x = 136,967,717.31/13,142.94
6. Step 6: Final answer
   x = 10,421.39