Finding the Fourth Proportional to 10,613.18, 14,650.93 and 7,780.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,613.18 : 14,650.93 = 7,780.56 : x
2. Step 2: Convert to fraction form
   10,613.18/14,650.93 = 7,780.56/x
3. Step 3: Cross multiply
   10,613.18x = 14,650.93 × 7,780.56
4. Step 4: Simplify right side
   10,613.18x = 113,992,350.94
5. Step 5: Solve for x
   x = 113,992,350.94/10,613.18
6. Step 6: Final answer
   x = 10,740.64