Finding the Fourth Proportional to 10,339.80, 14,514.60 and 10,339.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,339.80 : 14,514.60 = 10,339.80 : x
2. Step 2: Convert to fraction form
   10,339.80/14,514.60 = 10,339.80/x
3. Step 3: Cross multiply
   10,339.80x = 14,514.60 × 10,339.80
4. Step 4: Simplify right side
   10,339.80x = 150,078,061.08
5. Step 5: Solve for x
   x = 150,078,061.08/10,339.80
6. Step 6: Final answer
   x = 14,514.60