Finding the Fourth Proportional to 11,498.16, 17,169.34 and 9,131.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,498.16 : 17,169.34 = 9,131.62 : x
2. Step 2: Convert to fraction form
   11,498.16/17,169.34 = 9,131.62/x
3. Step 3: Cross multiply
   11,498.16x = 17,169.34 × 9,131.62
4. Step 4: Simplify right side
   11,498.16x = 156,783,888.53
5. Step 5: Solve for x
   x = 156,783,888.53/11,498.16
6. Step 6: Final answer
   x = 13,635.56