Finding the Fourth Proportional to 7,928.80, 10,938.24 and 5,572.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,928.80 : 10,938.24 = 5,572.48 : x
2. Step 2: Convert to fraction form
   7,928.80/10,938.24 = 5,572.48/x
3. Step 3: Cross multiply
   7,928.80x = 10,938.24 × 5,572.48
4. Step 4: Simplify right side
   7,928.80x = 60,953,123.64
5. Step 5: Solve for x
   x = 60,953,123.64/7,928.80
6. Step 6: Final answer
   x = 7,687.56