Finding the Fourth Proportional to 11,105.76, 16,666.82 and 5,262.36

Step by Step Solution

1. Step 1: Write the proportion equation
   11,105.76 : 16,666.82 = 5,262.36 : x
2. Step 2: Convert to fraction form
   11,105.76/16,666.82 = 5,262.36/x
3. Step 3: Cross multiply
   11,105.76x = 16,666.82 × 5,262.36
4. Step 4: Simplify right side
   11,105.76x = 87,706,806.90
5. Step 5: Solve for x
   x = 87,706,806.90/11,105.76
6. Step 6: Final answer
   x = 7,897.42