Finding the Fourth Proportional to 9,928.44, 13,700.71 and 5,452.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,928.44 : 13,700.71 = 5,452.78 : x
2. Step 2: Convert to fraction form
   9,928.44/13,700.71 = 5,452.78/x
3. Step 3: Cross multiply
   9,928.44x = 13,700.71 × 5,452.78
4. Step 4: Simplify right side
   9,928.44x = 74,706,957.47
5. Step 5: Solve for x
   x = 74,706,957.47/9,928.44
6. Step 6: Final answer
   x = 7,524.54