Finding the Fourth Proportional to 9,649.98, 13,316.31 and 5,400.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,649.98 : 13,316.31 = 5,400.86 : x
2. Step 2: Convert to fraction form
   9,649.98/13,316.31 = 5,400.86/x
3. Step 3: Cross multiply
   9,649.98x = 13,316.31 × 5,400.86
4. Step 4: Simplify right side
   9,649.98x = 71,919,459.45
5. Step 5: Solve for x
   x = 71,919,459.45/9,649.98
6. Step 6: Final answer
   x = 7,452.81