Finding the Fourth Proportional to 9,976.12, 14,955.98 and 3,972.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,976.12 : 14,955.98 = 3,972.80 : x
2. Step 2: Convert to fraction form
   9,976.12/14,955.98 = 3,972.80/x
3. Step 3: Cross multiply
   9,976.12x = 14,955.98 × 3,972.80
4. Step 4: Simplify right side
   9,976.12x = 59,417,134.87
5. Step 5: Solve for x
   x = 59,417,134.87/9,976.12
6. Step 6: Final answer
   x = 5,955.94