Finding the Fourth Proportional to 12,960.22, 19,442.61 and 5,361.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,960.22 : 19,442.61 = 5,361.48 : x
2. Step 2: Convert to fraction form
   12,960.22/19,442.61 = 5,361.48/x
3. Step 3: Cross multiply
   12,960.22x = 19,442.61 × 5,361.48
4. Step 4: Simplify right side
   12,960.22x = 104,241,156.17
5. Step 5: Solve for x
   x = 104,241,156.17/12,960.22
6. Step 6: Final answer
   x = 8,043.17