Finding the Fourth Proportional to 5,368.10, 7,408.04 and 2,978.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,368.10 : 7,408.04 = 2,978.12 : x
2. Step 2: Convert to fraction form
   5,368.10/7,408.04 = 2,978.12/x
3. Step 3: Cross multiply
   5,368.10x = 7,408.04 × 2,978.12
4. Step 4: Simplify right side
   5,368.10x = 22,062,035.71
5. Step 5: Solve for x
   x = 22,062,035.71/5,368.10
6. Step 6: Final answer
   x = 4,109.84