Finding the Fourth Proportional to 5,215.29, 7,196.61 and 2,977.14

Step by Step Solution

1. Step 1: Write the proportion equation
   5,215.29 : 7,196.61 = 2,977.14 : x
2. Step 2: Convert to fraction form
   5,215.29/7,196.61 = 2,977.14/x
3. Step 3: Cross multiply
   5,215.29x = 7,196.61 × 2,977.14
4. Step 4: Simplify right side
   5,215.29x = 21,425,315.50
5. Step 5: Solve for x
   x = 21,425,315.50/5,215.29
6. Step 6: Final answer
   x = 4,108.17