Finding the Fourth Proportional to 13,339.50, 18,409.59 and 7,751.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,339.50 : 18,409.59 = 7,751.58 : x
2. Step 2: Convert to fraction form
   13,339.50/18,409.59 = 7,751.58/x
3. Step 3: Cross multiply
   13,339.50x = 18,409.59 × 7,751.58
4. Step 4: Simplify right side
   13,339.50x = 142,703,409.65
5. Step 5: Solve for x
   x = 142,703,409.65/13,339.50
6. Step 6: Final answer
   x = 10,697.81