Finding the Fourth Proportional to 6,429.78, 9,653.59 and 3,312.01

Step by Step Solution

1. Step 1: Write the proportion equation
   6,429.78 : 9,653.59 = 3,312.01 : x
2. Step 2: Convert to fraction form
   6,429.78/9,653.59 = 3,312.01/x
3. Step 3: Cross multiply
   6,429.78x = 9,653.59 × 3,312.01
4. Step 4: Simplify right side
   6,429.78x = 31,972,786.62
5. Step 5: Solve for x
   x = 31,972,786.62/6,429.78
6. Step 6: Final answer
   x = 4,972.61