Finding the Fourth Proportional to 11,459.50, 17,215.56 and 8,090.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,459.50 : 17,215.56 = 8,090.04 : x
2. Step 2: Convert to fraction form
   11,459.50/17,215.56 = 8,090.04/x
3. Step 3: Cross multiply
   11,459.50x = 17,215.56 × 8,090.04
4. Step 4: Simplify right side
   11,459.50x = 139,274,569.02
5. Step 5: Solve for x
   x = 139,274,569.02/11,459.50
6. Step 6: Final answer
   x = 12,153.63