Finding the Fourth Proportional to 13,065.67, 18,018.34 and 10,076.77

Step by Step Solution

1. Step 1: Write the proportion equation
   13,065.67 : 18,018.34 = 10,076.77 : x
2. Step 2: Convert to fraction form
   13,065.67/18,018.34 = 10,076.77/x
3. Step 3: Cross multiply
   13,065.67x = 18,018.34 × 10,076.77
4. Step 4: Simplify right side
   13,065.67x = 181,566,667.96
5. Step 5: Solve for x
   x = 181,566,667.96/13,065.67
6. Step 6: Final answer
   x = 13,896.47