Finding the Fourth Proportional to 9,179.28, 12,667.22 and 5,402.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,179.28 : 12,667.22 = 5,402.84 : x
2. Step 2: Convert to fraction form
   9,179.28/12,667.22 = 5,402.84/x
3. Step 3: Cross multiply
   9,179.28x = 12,667.22 × 5,402.84
4. Step 4: Simplify right side
   9,179.28x = 68,438,962.90
5. Step 5: Solve for x
   x = 68,438,962.90/9,179.28
6. Step 6: Final answer
   x = 7,455.81