Finding the Fourth Proportional to 13,082.69, 18,053.86 and 7,114.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,082.69 : 18,053.86 = 7,114.31 : x
2. Step 2: Convert to fraction form
   13,082.69/18,053.86 = 7,114.31/x
3. Step 3: Cross multiply
   13,082.69x = 18,053.86 × 7,114.31
4. Step 4: Simplify right side
   13,082.69x = 128,440,756.74
5. Step 5: Solve for x
   x = 128,440,756.74/13,082.69
6. Step 6: Final answer
   x = 9,817.61