Finding the Fourth Proportional to 8,726.42, 13,111.50 and 8,201.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,726.42 : 13,111.50 = 8,201.54 : x
2. Step 2: Convert to fraction form
   8,726.42/13,111.50 = 8,201.54/x
3. Step 3: Cross multiply
   8,726.42x = 13,111.50 × 8,201.54
4. Step 4: Simplify right side
   8,726.42x = 107,534,426.15
5. Step 5: Solve for x
   x = 107,534,426.15/8,726.42
6. Step 6: Final answer
   x = 12,322.86