Finding the Fourth Proportional to 7,796.30, 10,761.18 and 5,439.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,796.30 : 10,761.18 = 5,439.20 : x
2. Step 2: Convert to fraction form
   7,796.30/10,761.18 = 5,439.20/x
3. Step 3: Cross multiply
   7,796.30x = 10,761.18 × 5,439.20
4. Step 4: Simplify right side
   7,796.30x = 58,532,210.26
5. Step 5: Solve for x
   x = 58,532,210.26/7,796.30
6. Step 6: Final answer
   x = 7,507.69