Finding the Fourth Proportional to 10,339.42, 14,268.36 and 5,623.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,339.42 : 14,268.36 = 5,623.78 : x
2. Step 2: Convert to fraction form
   10,339.42/14,268.36 = 5,623.78/x
3. Step 3: Cross multiply
   10,339.42x = 14,268.36 × 5,623.78
4. Step 4: Simplify right side
   10,339.42x = 80,242,117.60
5. Step 5: Solve for x
   x = 80,242,117.60/10,339.42
6. Step 6: Final answer
   x = 7,760.79