Finding the Fourth Proportional to 9,816.96, 14,728.68 and 3,978.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,816.96 : 14,728.68 = 3,978.48 : x
2. Step 2: Convert to fraction form
   9,816.96/14,728.68 = 3,978.48/x
3. Step 3: Cross multiply
   9,816.96x = 14,728.68 × 3,978.48
4. Step 4: Simplify right side
   9,816.96x = 58,597,758.81
5. Step 5: Solve for x
   x = 58,597,758.81/9,816.96
6. Step 6: Final answer
   x = 5,969.03