Finding the Fourth Proportional to 4,705.72, 7,047.45 and 4,086.06

Step by Step Solution

1. Step 1: Write the proportion equation
   4,705.72 : 7,047.45 = 4,086.06 : x
2. Step 2: Convert to fraction form
   4,705.72/7,047.45 = 4,086.06/x
3. Step 3: Cross multiply
   4,705.72x = 7,047.45 × 4,086.06
4. Step 4: Simplify right side
   4,705.72x = 28,796,303.55
5. Step 5: Solve for x
   x = 28,796,303.55/4,705.72
6. Step 6: Final answer
   x = 6,119.43