Finding the Fourth Proportional to 8,978.80, 13,467.12 and 2,405.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.80 : 13,467.12 = 2,405.48 : x
2. Step 2: Convert to fraction form
   8,978.80/13,467.12 = 2,405.48/x
3. Step 3: Cross multiply
   8,978.80x = 13,467.12 × 2,405.48
4. Step 4: Simplify right side
   8,978.80x = 32,394,887.82
5. Step 5: Solve for x
   x = 32,394,887.82/8,978.80
6. Step 6: Final answer
   x = 3,607.93