Finding the Fourth Proportional to 13,359.27, 18,435.02 and 7,390.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,359.27 : 18,435.02 = 7,390.58 : x
2. Step 2: Convert to fraction form
   13,359.27/18,435.02 = 7,390.58/x
3. Step 3: Cross multiply
   13,359.27x = 18,435.02 × 7,390.58
4. Step 4: Simplify right side
   13,359.27x = 136,245,506.31
5. Step 5: Solve for x
   x = 136,245,506.31/13,359.27
6. Step 6: Final answer
   x = 10,198.58