Finding the Fourth Proportional to 10,613.60, 14,839.60 and 10,613.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,613.60 : 14,839.60 = 10,613.60 : x
2. Step 2: Convert to fraction form
   10,613.60/14,839.60 = 10,613.60/x
3. Step 3: Cross multiply
   10,613.60x = 14,839.60 × 10,613.60
4. Step 4: Simplify right side
   10,613.60x = 157,501,578.56
5. Step 5: Solve for x
   x = 157,501,578.56/10,613.60
6. Step 6: Final answer
   x = 14,839.60