Finding the Fourth Proportional to 11,460.18, 17,216.58 and 8,090.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,460.18 : 17,216.58 = 8,090.72 : x
2. Step 2: Convert to fraction form
   11,460.18/17,216.58 = 8,090.72/x
3. Step 3: Cross multiply
   11,460.18x = 17,216.58 × 8,090.72
4. Step 4: Simplify right side
   11,460.18x = 139,294,528.14
5. Step 5: Solve for x
   x = 139,294,528.14/11,460.18
6. Step 6: Final answer
   x = 12,154.65