Finding the Fourth Proportional to 9,667.59, 13,341.42 and 5,418.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,667.59 : 13,341.42 = 5,418.87 : x
2. Step 2: Convert to fraction form
   9,667.59/13,341.42 = 5,418.87/x
3. Step 3: Cross multiply
   9,667.59x = 13,341.42 × 5,418.87
4. Step 4: Simplify right side
   9,667.59x = 72,295,420.60
5. Step 5: Solve for x
   x = 72,295,420.60/9,667.59
6. Step 6: Final answer
   x = 7,478.12