Finding the Fourth Proportional to 9,622.52, 13,278.12 and 5,429.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,622.52 : 13,278.12 = 5,429.96 : x
2. Step 2: Convert to fraction form
   9,622.52/13,278.12 = 5,429.96/x
3. Step 3: Cross multiply
   9,622.52x = 13,278.12 × 5,429.96
4. Step 4: Simplify right side
   9,622.52x = 72,099,660.48
5. Step 5: Solve for x
   x = 72,099,660.48/9,622.52
6. Step 6: Final answer
   x = 7,492.80