Finding the Fourth Proportional to 13,082.31, 18,053.82 and 7,113.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,082.31 : 18,053.82 = 7,113.96 : x
2. Step 2: Convert to fraction form
   13,082.31/18,053.82 = 7,113.96/x
3. Step 3: Cross multiply
   13,082.31x = 18,053.82 × 7,113.96
4. Step 4: Simplify right side
   13,082.31x = 128,434,153.33
5. Step 5: Solve for x
   x = 128,434,153.33/13,082.31
6. Step 6: Final answer
   x = 9,817.39