Finding the Fourth Proportional to 8,747.72, 12,069.78 and 4,970.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,747.72 : 12,069.78 = 4,970.96 : x
2. Step 2: Convert to fraction form
   8,747.72/12,069.78 = 4,970.96/x
3. Step 3: Cross multiply
   8,747.72x = 12,069.78 × 4,970.96
4. Step 4: Simplify right side
   8,747.72x = 59,998,393.59
5. Step 5: Solve for x
   x = 59,998,393.59/8,747.72
6. Step 6: Final answer
   x = 6,858.75