Finding the Fourth Proportional to 13,102.63, 18,081.59 and 7,134.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,102.63 : 18,081.59 = 7,134.34 : x
2. Step 2: Convert to fraction form
   13,102.63/18,081.59 = 7,134.34/x
3. Step 3: Cross multiply
   13,102.63x = 18,081.59 × 7,134.34
4. Step 4: Simplify right side
   13,102.63x = 129,000,210.80
5. Step 5: Solve for x
   x = 129,000,210.80/13,102.63
6. Step 6: Final answer
   x = 9,845.37