Finding the Fourth Proportional to 9,770.31, 14,621.40 and 7,994.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,770.31 : 14,621.40 = 7,994.79 : x
2. Step 2: Convert to fraction form
   9,770.31/14,621.40 = 7,994.79/x
3. Step 3: Cross multiply
   9,770.31x = 14,621.40 × 7,994.79
4. Step 4: Simplify right side
   9,770.31x = 116,895,022.51
5. Step 5: Solve for x
   x = 116,895,022.51/9,770.31
6. Step 6: Final answer
   x = 11,964.31