Finding the Fourth Proportional to 13,499.39, 18,629.04 and 7,449.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,499.39 : 18,629.04 = 7,449.69 : x
2. Step 2: Convert to fraction form
   13,499.39/18,629.04 = 7,449.69/x
3. Step 3: Cross multiply
   13,499.39x = 18,629.04 × 7,449.69
4. Step 4: Simplify right side
   13,499.39x = 138,780,573.00
5. Step 5: Solve for x
   x = 138,780,573.00/13,499.39
6. Step 6: Final answer
   x = 10,280.51