Finding the Fourth Proportional to 13,339.69, 18,410.39 and 7,750.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,339.69 : 18,410.39 = 7,750.69 : x
2. Step 2: Convert to fraction form
   13,339.69/18,410.39 = 7,750.69/x
3. Step 3: Cross multiply
   13,339.69x = 18,410.39 × 7,750.69
4. Step 4: Simplify right side
   13,339.69x = 142,693,169.95
5. Step 5: Solve for x
   x = 142,693,169.95/13,339.69
6. Step 6: Final answer
   x = 10,696.89