Finding the Fourth Proportional to 13,141.69, 18,132.83 and 7,551.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,141.69 : 18,132.83 = 7,551.61 : x
2. Step 2: Convert to fraction form
   13,141.69/18,132.83 = 7,551.61/x
3. Step 3: Cross multiply
   13,141.69x = 18,132.83 × 7,551.61
4. Step 4: Simplify right side
   13,141.69x = 136,932,022.60
5. Step 5: Solve for x
   x = 136,932,022.60/13,141.69
6. Step 6: Final answer
   x = 10,419.67