Finding the Fourth Proportional to 10,667.80, 16,004.19 and 3,647.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,667.80 : 16,004.19 = 3,647.87 : x
2. Step 2: Convert to fraction form
   10,667.80/16,004.19 = 3,647.87/x
3. Step 3: Cross multiply
   10,667.80x = 16,004.19 × 3,647.87
4. Step 4: Simplify right side
   10,667.80x = 58,381,204.58
5. Step 5: Solve for x
   x = 58,381,204.58/10,667.80
6. Step 6: Final answer
   x = 5,472.66