Finding the Fourth Proportional to 13,830.78, 20,747.94 and 5,064.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,830.78 : 20,747.94 = 5,064.42 : x
2. Step 2: Convert to fraction form
   13,830.78/20,747.94 = 5,064.42/x
3. Step 3: Cross multiply
   13,830.78x = 20,747.94 × 5,064.42
4. Step 4: Simplify right side
   13,830.78x = 105,076,282.29
5. Step 5: Solve for x
   x = 105,076,282.29/13,830.78
6. Step 6: Final answer
   x = 7,597.28