Finding the Fourth Proportional to 7,803.20, 10,761.39 and 5,153.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,803.20 : 10,761.39 = 5,153.28 : x
2. Step 2: Convert to fraction form
   7,803.20/10,761.39 = 5,153.28/x
3. Step 3: Cross multiply
   7,803.20x = 10,761.39 × 5,153.28
4. Step 4: Simplify right side
   7,803.20x = 55,456,455.86
5. Step 5: Solve for x
   x = 55,456,455.86/7,803.20
6. Step 6: Final answer
   x = 7,106.89