Finding the Fourth Proportional to 12,436.18, 17,140.29 and 9,073.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436.18 : 17,140.29 = 9,073.45 : x
2. Step 2: Convert to fraction form
   12,436.18/17,140.29 = 9,073.45/x
3. Step 3: Cross multiply
   12,436.18x = 17,140.29 × 9,073.45
4. Step 4: Simplify right side
   12,436.18x = 155,521,564.30
5. Step 5: Solve for x
   x = 155,521,564.30/12,436.18
6. Step 6: Final answer
   x = 12,505.57