Finding the Fourth Proportional to 8,816.25, 12,166.43 and 5,090.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,816.25 : 12,166.43 = 5,090.25 : x
2. Step 2: Convert to fraction form
   8,816.25/12,166.43 = 5,090.25/x
3. Step 3: Cross multiply
   8,816.25x = 12,166.43 × 5,090.25
4. Step 4: Simplify right side
   8,816.25x = 61,930,144.86
5. Step 5: Solve for x
   x = 61,930,144.86/8,816.25
6. Step 6: Final answer
   x = 7,024.55