Finding the Fourth Proportional to 13,074.84, 18,040.38 and 7,409.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,074.84 : 18,040.38 = 7,409.10 : x
2. Step 2: Convert to fraction form
   13,074.84/18,040.38 = 7,409.10/x
3. Step 3: Cross multiply
   13,074.84x = 18,040.38 × 7,409.10
4. Step 4: Simplify right side
   13,074.84x = 133,662,979.46
5. Step 5: Solve for x
   x = 133,662,979.46/13,074.84
6. Step 6: Final answer
   x = 10,222.92