Finding the Fourth Proportional to 10,165.89, 15,159.39 and 9,358.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,165.89 : 15,159.39 = 9,358.05 : x
2. Step 2: Convert to fraction form
   10,165.89/15,159.39 = 9,358.05/x
3. Step 3: Cross multiply
   10,165.89x = 15,159.39 × 9,358.05
4. Step 4: Simplify right side
   10,165.89x = 141,862,329.59
5. Step 5: Solve for x
   x = 141,862,329.59/10,165.89
6. Step 6: Final answer
   x = 13,954.74