Finding the Fourth Proportional to 13,106.04, 18,086.42 and 7,137.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,106.04 : 18,086.42 = 7,137.59 : x
2. Step 2: Convert to fraction form
   13,106.04/18,086.42 = 7,137.59/x
3. Step 3: Cross multiply
   13,106.04x = 18,086.42 × 7,137.59
4. Step 4: Simplify right side
   13,106.04x = 129,093,377.94
5. Step 5: Solve for x
   x = 129,093,377.94/13,106.04
6. Step 6: Final answer
   x = 9,849.92