Finding the Fourth Proportional to 9,144.60, 12,617.88 and 5,367.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,144.60 : 12,617.88 = 5,367.92 : x
2. Step 2: Convert to fraction form
   9,144.60/12,617.88 = 5,367.92/x
3. Step 3: Cross multiply
   9,144.60x = 12,617.88 × 5,367.92
4. Step 4: Simplify right side
   9,144.60x = 67,731,758.17
5. Step 5: Solve for x
   x = 67,731,758.17/9,144.60
6. Step 6: Final answer
   x = 7,406.75