Finding the Fourth Proportional to 9,316.72, 12,852.56 and 5,537.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,316.72 : 12,852.56 = 5,537.21 : x
2. Step 2: Convert to fraction form
   9,316.72/12,852.56 = 5,537.21/x
3. Step 3: Cross multiply
   9,316.72x = 12,852.56 × 5,537.21
4. Step 4: Simplify right side
   9,316.72x = 71,167,355.89
5. Step 5: Solve for x
   x = 71,167,355.89/9,316.72
6. Step 6: Final answer
   x = 7,638.67