Finding the Fourth Proportional to 13,066.98, 18,028.08 and 7,401.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,066.98 : 18,028.08 = 7,401.15 : x
2. Step 2: Convert to fraction form
   13,066.98/18,028.08 = 7,401.15/x
3. Step 3: Cross multiply
   13,066.98x = 18,028.08 × 7,401.15
4. Step 4: Simplify right side
   13,066.98x = 133,428,524.29
5. Step 5: Solve for x
   x = 133,428,524.29/13,066.98
6. Step 6: Final answer
   x = 10,211.12