Finding the Fourth Proportional to 9,429.68, 14,150.49 and 5,272.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,429.68 : 14,150.49 = 5,272.42 : x
2. Step 2: Convert to fraction form
   9,429.68/14,150.49 = 5,272.42/x
3. Step 3: Cross multiply
   9,429.68x = 14,150.49 × 5,272.42
4. Step 4: Simplify right side
   9,429.68x = 74,607,326.49
5. Step 5: Solve for x
   x = 74,607,326.49/9,429.68
6. Step 6: Final answer
   x = 7,911.97