Finding the Fourth Proportional to 19,871.92, 29,807.78 and 5,080.82

Step by Step Solution

1. Step 1: Write the proportion equation
   19,871.92 : 29,807.78 = 5,080.82 : x
2. Step 2: Convert to fraction form
   19,871.92/29,807.78 = 5,080.82/x
3. Step 3: Cross multiply
   19,871.92x = 29,807.78 × 5,080.82
4. Step 4: Simplify right side
   19,871.92x = 151,447,964.78
5. Step 5: Solve for x
   x = 151,447,964.78/19,871.92
6. Step 6: Final answer
   x = 7,621.20