Finding the Fourth Proportional to 13,578.62, 18,738.27 and 7,610.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,578.62 : 18,738.27 = 7,610.25 : x
2. Step 2: Convert to fraction form
   13,578.62/18,738.27 = 7,610.25/x
3. Step 3: Cross multiply
   13,578.62x = 18,738.27 × 7,610.25
4. Step 4: Simplify right side
   13,578.62x = 142,602,919.27
5. Step 5: Solve for x
   x = 142,602,919.27/13,578.62
6. Step 6: Final answer
   x = 10,502.02