Finding the Fourth Proportional to 9,978.16, 14,968.86 and 3,403.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.16 : 14,968.86 = 3,403.68 : x
2. Step 2: Convert to fraction form
   9,978.16/14,968.86 = 3,403.68/x
3. Step 3: Cross multiply
   9,978.16x = 14,968.86 × 3,403.68
4. Step 4: Simplify right side
   9,978.16x = 50,949,209.40
5. Step 5: Solve for x
   x = 50,949,209.40/9,978.16
6. Step 6: Final answer
   x = 5,106.07