Finding the Fourth Proportional to 8,377.48, 12,577.18 and 7,087.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,377.48 : 12,577.18 = 7,087.16 : x
2. Step 2: Convert to fraction form
   8,377.48/12,577.18 = 7,087.16/x
3. Step 3: Cross multiply
   8,377.48x = 12,577.18 × 7,087.16
4. Step 4: Simplify right side
   8,377.48x = 89,136,487.01
5. Step 5: Solve for x
   x = 89,136,487.01/8,377.48
6. Step 6: Final answer
   x = 10,640.01