Finding the Fourth Proportional to 12,078.75, 18,125.42 and 5,153.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,078.75 : 18,125.42 = 5,153.25 : x
2. Step 2: Convert to fraction form
   12,078.75/18,125.42 = 5,153.25/x
3. Step 3: Cross multiply
   12,078.75x = 18,125.42 × 5,153.25
4. Step 4: Simplify right side
   12,078.75x = 93,404,820.62
5. Step 5: Solve for x
   x = 93,404,820.62/12,078.75
6. Step 6: Final answer
   x = 7,732.99