Finding the Fourth Proportional to 9,978.60, 14,964.30 and 5,046.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.60 : 14,964.30 = 5,046.60 : x
2. Step 2: Convert to fraction form
   9,978.60/14,964.30 = 5,046.60/x
3. Step 3: Cross multiply
   9,978.60x = 14,964.30 × 5,046.60
4. Step 4: Simplify right side
   9,978.60x = 75,518,836.38
5. Step 5: Solve for x
   x = 75,518,836.38/9,978.60
6. Step 6: Final answer
   x = 7,568.08