Finding the Fourth Proportional to 11,641.48, 16,072.42 and 8,013.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,641.48 : 16,072.42 = 8,013.72 : x
2. Step 2: Convert to fraction form
   11,641.48/16,072.42 = 8,013.72/x
3. Step 3: Cross multiply
   11,641.48x = 16,072.42 × 8,013.72
4. Step 4: Simplify right side
   11,641.48x = 128,799,873.60
5. Step 5: Solve for x
   x = 128,799,873.60/11,641.48
6. Step 6: Final answer
   x = 11,063.87