Finding the Fourth Proportional to 9,667.63, 13,340.53 and 5,418.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,667.63 : 13,340.53 = 5,418.07 : x
2. Step 2: Convert to fraction form
   9,667.63/13,340.53 = 5,418.07/x
3. Step 3: Cross multiply
   9,667.63x = 13,340.53 × 5,418.07
4. Step 4: Simplify right side
   9,667.63x = 72,279,925.38
5. Step 5: Solve for x
   x = 72,279,925.38/9,667.63
6. Step 6: Final answer
   x = 7,476.49