Finding the Fourth Proportional to 9,978.86, 14,966.36 and 3,314.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.86 : 14,966.36 = 3,314.32 : x
2. Step 2: Convert to fraction form
   9,978.86/14,966.36 = 3,314.32/x
3. Step 3: Cross multiply
   9,978.86x = 14,966.36 × 3,314.32
4. Step 4: Simplify right side
   9,978.86x = 49,603,260.06
5. Step 5: Solve for x
   x = 49,603,260.06/9,978.86
6. Step 6: Final answer
   x = 4,970.84