Finding the Fourth Proportional to 9,621.27, 13,276.83 and 5,429.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,621.27 : 13,276.83 = 5,429.25 : x
2. Step 2: Convert to fraction form
   9,621.27/13,276.83 = 5,429.25/x
3. Step 3: Cross multiply
   9,621.27x = 13,276.83 × 5,429.25
4. Step 4: Simplify right side
   9,621.27x = 72,083,229.28
5. Step 5: Solve for x
   x = 72,083,229.28/9,621.27
6. Step 6: Final answer
   x = 7,492.07