Finding the Fourth Proportional to 17,139.51, 23,645.57 and 11,169

Step by Step Solution

1. Step 1: Write the proportion equation
   17,139.51 : 23,645.57 = 11,169 : x
2. Step 2: Convert to fraction form
   17,139.51/23,645.57 = 11,169/x
3. Step 3: Cross multiply
   17,139.51x = 23,645.57 × 11,169
4. Step 4: Simplify right side
   17,139.51x = 264,097,315.49
5. Step 5: Solve for x
   x = 264,097,315.49/17,139.51
6. Step 6: Final answer
   x = 15,408.69