Finding the Fourth Proportional to 9,864.34, 14,796.60 and 3,290.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,864.34 : 14,796.60 = 3,290.50 : x
2. Step 2: Convert to fraction form
   9,864.34/14,796.60 = 3,290.50/x
3. Step 3: Cross multiply
   9,864.34x = 14,796.60 × 3,290.50
4. Step 4: Simplify right side
   9,864.34x = 48,688,212.30
5. Step 5: Solve for x
   x = 48,688,212.30/9,864.34
6. Step 6: Final answer
   x = 4,935.78