Finding the Fourth Proportional to 10,336.47, 14,264.67 and 5,620.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,336.47 : 14,264.67 = 5,620.78 : x
2. Step 2: Convert to fraction form
   10,336.47/14,264.67 = 5,620.78/x
3. Step 3: Cross multiply
   10,336.47x = 14,264.67 × 5,620.78
4. Step 4: Simplify right side
   10,336.47x = 80,178,571.84
5. Step 5: Solve for x
   x = 80,178,571.84/10,336.47
6. Step 6: Final answer
   x = 7,756.86