Finding the Fourth Proportional to 7,152.48, 9,870.84 and 5,380.92

Step by Step Solution

1. Step 1: Write the proportion equation
   7,152.48 : 9,870.84 = 5,380.92 : x
2. Step 2: Convert to fraction form
   7,152.48/9,870.84 = 5,380.92/x
3. Step 3: Cross multiply
   7,152.48x = 9,870.84 × 5,380.92
4. Step 4: Simplify right side
   7,152.48x = 53,114,200.37
5. Step 5: Solve for x
   x = 53,114,200.37/7,152.48
6. Step 6: Final answer
   x = 7,425.98