Finding the Fourth Proportional to 13,102.50, 18,081.18 and 7,134.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,102.50 : 18,081.18 = 7,134.27 : x
2. Step 2: Convert to fraction form
   13,102.50/18,081.18 = 7,134.27/x
3. Step 3: Cross multiply
   13,102.50x = 18,081.18 × 7,134.27
4. Step 4: Simplify right side
   13,102.50x = 128,996,020.04
5. Step 5: Solve for x
   x = 128,996,020.04/13,102.50
6. Step 6: Final answer
   x = 9,845.15