Finding the Fourth Proportional to 9,672.72, 13,349.48 and 5,424.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,672.72 : 13,349.48 = 5,424.95 : x
2. Step 2: Convert to fraction form
   9,672.72/13,349.48 = 5,424.95/x
3. Step 3: Cross multiply
   9,672.72x = 13,349.48 × 5,424.95
4. Step 4: Simplify right side
   9,672.72x = 72,420,167.65
5. Step 5: Solve for x
   x = 72,420,167.65/9,672.72
6. Step 6: Final answer
   x = 7,487.05