Finding the Fourth Proportional to 13,641.09, 18,824.76 and 7,672.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,641.09 : 18,824.76 = 7,672.83 : x
2. Step 2: Convert to fraction form
   13,641.09/18,824.76 = 7,672.83/x
3. Step 3: Cross multiply
   13,641.09x = 18,824.76 × 7,672.83
4. Step 4: Simplify right side
   13,641.09x = 144,439,183.27
5. Step 5: Solve for x
   x = 144,439,183.27/13,641.09
6. Step 6: Final answer
   x = 10,588.54