Finding the Fourth Proportional to 13,766.01, 18,996.96 and 7,478.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,766.01 : 18,996.96 = 7,478.38 : x
2. Step 2: Convert to fraction form
   13,766.01/18,996.96 = 7,478.38/x
3. Step 3: Cross multiply
   13,766.01x = 18,996.96 × 7,478.38
4. Step 4: Simplify right side
   13,766.01x = 142,066,485.72
5. Step 5: Solve for x
   x = 142,066,485.72/13,766.01
6. Step 6: Final answer
   x = 10,320.09