Finding the Fourth Proportional to 13,102.42, 18,081.25 and 7,134.08

Step by Step Solution

1. Step 1: Write the proportion equation
   13,102.42 : 18,081.25 = 7,134.08 : x
2. Step 2: Convert to fraction form
   13,102.42/18,081.25 = 7,134.08/x
3. Step 3: Cross multiply
   13,102.42x = 18,081.25 × 7,134.08
4. Step 4: Simplify right side
   13,102.42x = 128,993,111.37
5. Step 5: Solve for x
   x = 128,993,111.37/13,102.42
6. Step 6: Final answer
   x = 9,844.99