Finding the Fourth Proportional to 17,090.96, 23,570.72 and 11,120.40

Step by Step Solution

1. Step 1: Write the proportion equation
   17,090.96 : 23,570.72 = 11,120.40 : x
2. Step 2: Convert to fraction form
   17,090.96/23,570.72 = 11,120.40/x
3. Step 3: Cross multiply
   17,090.96x = 23,570.72 × 11,120.40
4. Step 4: Simplify right side
   17,090.96x = 262,115,834.69
5. Step 5: Solve for x
   x = 262,115,834.69/17,090.96
6. Step 6: Final answer
   x = 15,336.52