Finding the Fourth Proportional to 10,623.78, 15,924.69 and 4,784.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,623.78 : 15,924.69 = 4,784.49 : x
2. Step 2: Convert to fraction form
   10,623.78/15,924.69 = 4,784.49/x
3. Step 3: Cross multiply
   10,623.78x = 15,924.69 × 4,784.49
4. Step 4: Simplify right side
   10,623.78x = 76,191,520.06
5. Step 5: Solve for x
   x = 76,191,520.06/10,623.78
6. Step 6: Final answer
   x = 7,171.79