Finding the Fourth Proportional to 13,399.49, 18,488.34 and 7,733.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,399.49 : 18,488.34 = 7,733.04 : x
2. Step 2: Convert to fraction form
   13,399.49/18,488.34 = 7,733.04/x
3. Step 3: Cross multiply
   13,399.49x = 18,488.34 × 7,733.04
4. Step 4: Simplify right side
   13,399.49x = 142,971,080.48
5. Step 5: Solve for x
   x = 142,971,080.48/13,399.49
6. Step 6: Final answer
   x = 10,669.89