Finding the Fourth Proportional to 9,648.72, 13,316.46 and 5,457.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,648.72 : 13,316.46 = 5,457.84 : x
2. Step 2: Convert to fraction form
   9,648.72/13,316.46 = 5,457.84/x
3. Step 3: Cross multiply
   9,648.72x = 13,316.46 × 5,457.84
4. Step 4: Simplify right side
   9,648.72x = 72,679,108.05
5. Step 5: Solve for x
   x = 72,679,108.05/9,648.72
6. Step 6: Final answer
   x = 7,532.51