Finding the Fourth Proportional to 8,739.05, 13,084.15 and 4,722.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,739.05 : 13,084.15 = 4,722.05 : x
2. Step 2: Convert to fraction form
   8,739.05/13,084.15 = 4,722.05/x
3. Step 3: Cross multiply
   8,739.05x = 13,084.15 × 4,722.05
4. Step 4: Simplify right side
   8,739.05x = 61,783,956.89
5. Step 5: Solve for x
   x = 61,783,956.89/8,739.05
6. Step 6: Final answer
   x = 7,069.87