Finding the Fourth Proportional to 8,978.65, 13,468.88 and 2,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.65 : 13,468.88 = 2,405.50 : x
2. Step 2: Convert to fraction form
   8,978.65/13,468.88 = 2,405.50/x
3. Step 3: Cross multiply
   8,978.65x = 13,468.88 × 2,405.50
4. Step 4: Simplify right side
   8,978.65x = 32,399,363.18
5. Step 5: Solve for x
   x = 32,399,363.18/8,978.65
6. Step 6: Final answer
   x = 3,608.49