Finding the Fourth Proportional to 12,667.77, 18,995.90 and 5,267.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.77 : 18,995.90 = 5,267.82 : x
2. Step 2: Convert to fraction form
   12,667.77/18,995.90 = 5,267.82/x
3. Step 3: Cross multiply
   12,667.77x = 18,995.90 × 5,267.82
4. Step 4: Simplify right side
   12,667.77x = 100,066,955.60
5. Step 5: Solve for x
   x = 100,066,955.60/12,667.77
6. Step 6: Final answer
   x = 7,899.33