Finding the Fourth Proportional to 10,158.42, 15,193.89 and 9,040.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,158.42 : 15,193.89 = 9,040.62 : x
2. Step 2: Convert to fraction form
   10,158.42/15,193.89 = 9,040.62/x
3. Step 3: Cross multiply
   10,158.42x = 15,193.89 × 9,040.62
4. Step 4: Simplify right side
   10,158.42x = 137,362,185.81
5. Step 5: Solve for x
   x = 137,362,185.81/10,158.42
6. Step 6: Final answer
   x = 13,522.00