Finding the Fourth Proportional to 13,123.01, 18,109.51 and 7,154.73

Step by Step Solution

1. Step 1: Write the proportion equation
   13,123.01 : 18,109.51 = 7,154.73 : x
2. Step 2: Convert to fraction form
   13,123.01/18,109.51 = 7,154.73/x
3. Step 3: Cross multiply
   13,123.01x = 18,109.51 × 7,154.73
4. Step 4: Simplify right side
   13,123.01x = 129,568,654.48
5. Step 5: Solve for x
   x = 129,568,654.48/13,123.01
6. Step 6: Final answer
   x = 9,873.39