Finding the Fourth Proportional to 13,262.41, 18,299.37 and 7,886.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,262.41 : 18,299.37 = 7,886.76 : x
2. Step 2: Convert to fraction form
   13,262.41/18,299.37 = 7,886.76/x
3. Step 3: Cross multiply
   13,262.41x = 18,299.37 × 7,886.76
4. Step 4: Simplify right side
   13,262.41x = 144,322,739.34
5. Step 5: Solve for x
   x = 144,322,739.34/13,262.41
6. Step 6: Final answer
   x = 10,882.09