Finding the Fourth Proportional to 9,309.10, 13,959.60 and 3,066.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,309.10 : 13,959.60 = 3,066.70 : x
2. Step 2: Convert to fraction form
   9,309.10/13,959.60 = 3,066.70/x
3. Step 3: Cross multiply
   9,309.10x = 13,959.60 × 3,066.70
4. Step 4: Simplify right side
   9,309.10x = 42,809,905.32
5. Step 5: Solve for x
   x = 42,809,905.32/9,309.10
6. Step 6: Final answer
   x = 4,598.72