Finding the Fourth Proportional to 9,153.68, 12,628.20 and 5,426.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,153.68 : 12,628.20 = 5,426.96 : x
2. Step 2: Convert to fraction form
   9,153.68/12,628.20 = 5,426.96/x
3. Step 3: Cross multiply
   9,153.68x = 12,628.20 × 5,426.96
4. Step 4: Simplify right side
   9,153.68x = 68,532,736.27
5. Step 5: Solve for x
   x = 68,532,736.27/9,153.68
6. Step 6: Final answer
   x = 7,486.91