Finding the Fourth Proportional to 9,667.34, 13,341.88 and 5,418.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,667.34 : 13,341.88 = 5,418.40 : x
2. Step 2: Convert to fraction form
   9,667.34/13,341.88 = 5,418.40/x
3. Step 3: Cross multiply
   9,667.34x = 13,341.88 × 5,418.40
4. Step 4: Simplify right side
   9,667.34x = 72,291,642.59
5. Step 5: Solve for x
   x = 72,291,642.59/9,667.34
6. Step 6: Final answer
   x = 7,477.92