Finding the Fourth Proportional to 13,066.50, 18,034.20 and 7,477.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,066.50 : 18,034.20 = 7,477.50 : x
2. Step 2: Convert to fraction form
   13,066.50/18,034.20 = 7,477.50/x
3. Step 3: Cross multiply
   13,066.50x = 18,034.20 × 7,477.50
4. Step 4: Simplify right side
   13,066.50x = 134,850,730.50
5. Step 5: Solve for x
   x = 134,850,730.50/13,066.50
6. Step 6: Final answer
   x = 10,320.34