Finding the Fourth Proportional to 5,216.04, 7,198.17 and 2,978.01

Step by Step Solution

1. Step 1: Write the proportion equation
   5,216.04 : 7,198.17 = 2,978.01 : x
2. Step 2: Convert to fraction form
   5,216.04/7,198.17 = 2,978.01/x
3. Step 3: Cross multiply
   5,216.04x = 7,198.17 × 2,978.01
4. Step 4: Simplify right side
   5,216.04x = 21,436,222.24
5. Step 5: Solve for x
   x = 21,436,222.24/5,216.04
6. Step 6: Final answer
   x = 4,109.67