Finding the Fourth Proportional to 5,130.05, 7,079.89 and 2,892.16

Step by Step Solution

1. Step 1: Write the proportion equation
   5,130.05 : 7,079.89 = 2,892.16 : x
2. Step 2: Convert to fraction form
   5,130.05/7,079.89 = 2,892.16/x
3. Step 3: Cross multiply
   5,130.05x = 7,079.89 × 2,892.16
4. Step 4: Simplify right side
   5,130.05x = 20,476,139.26
5. Step 5: Solve for x
   x = 20,476,139.26/5,130.05
6. Step 6: Final answer
   x = 3,991.41