Finding the Fourth Proportional to 7,977.30, 12,025.66 and 7,442.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,977.30 : 12,025.66 = 7,442.09 : x
2. Step 2: Convert to fraction form
   7,977.30/12,025.66 = 7,442.09/x
3. Step 3: Cross multiply
   7,977.30x = 12,025.66 × 7,442.09
4. Step 4: Simplify right side
   7,977.30x = 89,496,044.03
5. Step 5: Solve for x
   x = 89,496,044.03/7,977.30
6. Step 6: Final answer
   x = 11,218.84