Finding the Fourth Proportional to 13,097.23, 18,082.34 and 9,116.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,097.23 : 18,082.34 = 9,116.89 : x
2. Step 2: Convert to fraction form
   13,097.23/18,082.34 = 9,116.89/x
3. Step 3: Cross multiply
   13,097.23x = 18,082.34 × 9,116.89
4. Step 4: Simplify right side
   13,097.23x = 164,854,682.31
5. Step 5: Solve for x
   x = 164,854,682.31/13,097.23
6. Step 6: Final answer
   x = 12,586.99